9.8
CRITICAL
CVE-2021-3177
"Microsoft Windows ctypes Buffer Overflow Vulnerability"
Description

Python 3.x through 3.9.1 has a buffer overflow in PyCArg_repr in _ctypes/callproc.c, which may lead to remote code execution in certain Python applications that accept floating-point numbers as untrusted input, as demonstrated by a 1e300 argument to c_double.from_param. This occurs because sprintf is used unsafely.

INFO

Published Date :

Jan. 19, 2021, 6:15 a.m.

Last Modified :

Nov. 7, 2023, 3:37 a.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

3.9
Public PoC/Exploit Available at Github

CVE-2021-3177 has a 5 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2021-3177 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Oracle zfs_storage_appliance_kit
2 Oracle communications_pricing_design_center
3 Oracle enterprise_manager_ops_center
4 Oracle communications_offline_mediation_controller
5 Oracle communications_cloud_native_core_network_function_cloud_native_environment
1 Netapp active_iq_unified_manager
2 Netapp ontap_select_deploy_administration_utility
1 Fedoraproject fedora
1 Debian debian_linux
1 Python python
: Total Affected Vendor : 5 | Products : 10
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-3177.

URL Resource
https://bugs.python.org/issue42938 Exploit Issue Tracking Patch Vendor Advisory
https://github.com/python/cpython/pull/24239 Patch Third Party Advisory
https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E
https://lists.debian.org/debian-lts-announce/2021/04/msg00005.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/02/msg00013.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/05/msg00024.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BRHOCQYX3QLDGDQGTWQAUUT2GGIZCZUO/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CCFZMVRQUKCBQIG5F2CBVADK63NFSE4A/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FONHJIOZOFD7CD35KZL6SVBUTMBPGZGA/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FPE7SMXYUIWPOIZV4DQYXODRXMFX3C5E/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HCQTCSP6SCVIYNIRUJC5X7YBVUHPLSC4/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MGSV6BJQLRQ6RKVUXK7JGU7TP4QFGQXC/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MP572OLHMS7MZO4KUPSCIMSZIA5IZZ62/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NODWHDIFBQE5RU5PUWUVE47JOT5VCMJ2/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NQPARTLNSFQVMMQHPNBFOCOZOO3TMQNA/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NXSMBHES3ANXXS2RSO5G6Q24BR4B2PWK/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V6XJAULOS5JVB2L67NCKKMJ5NTKZJBSD/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y4KSYYWMGAKOA2JVCQA422OINT6CKQ7O/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YDTZVGSXQ7HR7OCGSUHTRNTMBG43OMKU/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z7GZV74KM72O2PEJN2C4XP3V5Q5MZUOO/
https://news.ycombinator.com/item?id=26185005 Third Party Advisory
https://python-security.readthedocs.io/vuln/ctypes-buffer-overflow-pycarg_repr.html Patch Third Party Advisory
https://security.gentoo.org/glsa/202101-18 Third Party Advisory
https://security.netapp.com/advisory/ntap-20210226-0003/ Third Party Advisory
https://www.oracle.com//security-alerts/cpujul2021.html Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpujan2022.html Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.html Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpuoct2021.html Patch Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
Mohit190405/Python-Programming-

None

Updated: 2 months, 2 weeks ago
0 stars 0 fork 0 watcher
Born at : Aug. 23, 2024, 8:15 a.m. This repo has been linked 3 different CVEs too.
Profile Photo
vincent-deng/veracode-container-security-finding-parser

Map Vulnerabilities into Different Layers of the Container Image

Python

Updated: 1 year, 10 months ago
1 stars 0 fork 0 watcher
Born at : Oct. 5, 2022, 12:07 p.m. This repo has been linked 1276 different CVEs too.
Profile Photo
leveryd/leveryd

None

Updated: 8 months ago
4 stars 0 fork 0 watcher
Born at : April 18, 2022, 3:49 p.m. This repo has been linked 3 different CVEs too.
Profile Photo
TAPAKAH20/python_dos_demo

None

Dockerfile Python

Updated: 3 years, 7 months ago
0 stars 0 fork 0 watcher
Born at : March 16, 2021, 3:38 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
tianocore/edk2-edkrepo

Repository for the edkrepo utility

Python Batchfile C# Shell

Updated: 2 months, 2 weeks ago
21 stars 24 fork 24 watcher
Born at : Feb. 4, 2021, 11:14 p.m. This repo has been linked 1 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-3177 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-3177 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MGSV6BJQLRQ6RKVUXK7JGU7TP4QFGQXC/ [No types assigned]
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NQPARTLNSFQVMMQHPNBFOCOZOO3TMQNA/ [No types assigned]
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z7GZV74KM72O2PEJN2C4XP3V5Q5MZUOO/ [No types assigned]
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CCFZMVRQUKCBQIG5F2CBVADK63NFSE4A/ [No types assigned]
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BRHOCQYX3QLDGDQGTWQAUUT2GGIZCZUO/ [No types assigned]
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NXSMBHES3ANXXS2RSO5G6Q24BR4B2PWK/ [No types assigned]
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V6XJAULOS5JVB2L67NCKKMJ5NTKZJBSD/ [No types assigned]
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YDTZVGSXQ7HR7OCGSUHTRNTMBG43OMKU/ [No types assigned]
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y4KSYYWMGAKOA2JVCQA422OINT6CKQ7O/ [No types assigned]
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FPE7SMXYUIWPOIZV4DQYXODRXMFX3C5E/ [No types assigned]
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HCQTCSP6SCVIYNIRUJC5X7YBVUHPLSC4/ [No types assigned]
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NODWHDIFBQE5RU5PUWUVE47JOT5VCMJ2/ [No types assigned]
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MP572OLHMS7MZO4KUPSCIMSZIA5IZZ62/ [No types assigned]
    Added Reference MITRE https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E [No types assigned]
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FONHJIOZOFD7CD35KZL6SVBUTMBPGZGA/ [No types assigned]
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/NQPARTLNSFQVMMQHPNBFOCOZOO3TMQNA/
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/MGSV6BJQLRQ6RKVUXK7JGU7TP4QFGQXC/
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/Z7GZV74KM72O2PEJN2C4XP3V5Q5MZUOO/
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/CCFZMVRQUKCBQIG5F2CBVADK63NFSE4A/
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/BRHOCQYX3QLDGDQGTWQAUUT2GGIZCZUO/
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/V6XJAULOS5JVB2L67NCKKMJ5NTKZJBSD/
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/NXSMBHES3ANXXS2RSO5G6Q24BR4B2PWK/
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/YDTZVGSXQ7HR7OCGSUHTRNTMBG43OMKU/
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/Y4KSYYWMGAKOA2JVCQA422OINT6CKQ7O/
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/FPE7SMXYUIWPOIZV4DQYXODRXMFX3C5E/
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/HCQTCSP6SCVIYNIRUJC5X7YBVUHPLSC4/
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/NODWHDIFBQE5RU5PUWUVE47JOT5VCMJ2/
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/MP572OLHMS7MZO4KUPSCIMSZIA5IZZ62/
    Removed Reference MITRE https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772@%3Cdev.mina.apache.org%3E
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/FONHJIOZOFD7CD35KZL6SVBUTMBPGZGA/
  • CVE Modified by [email protected]

    May. 24, 2023

    Action Type Old Value New Value
    Added Reference https://lists.debian.org/debian-lts-announce/2023/05/msg00024.html [No Types Assigned]
  • Modified Analysis by [email protected]

    Dec. 06, 2022

    Action Type Old Value New Value
    Changed Reference Type https://www.oracle.com/security-alerts/cpujul2022.html No Types Assigned https://www.oracle.com/security-alerts/cpujul2022.html Patch, Third Party Advisory
    Changed CPE Configuration OR *cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:linux:*:* *cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vsphere:*:* *cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:windows:*:* *cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:* OR *cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:* *cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:windows:*:* *cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*
    Changed CPE Configuration OR *cpe:2.3:a:oracle:communications_offline_mediation_controller:12.0.0.3.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:communications_pricing_design_center:12.0.0.3.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:enterprise_manager_ops_center:12.4.0.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:* OR *cpe:2.3:a:oracle:communications_cloud_native_core_network_function_cloud_native_environment:22.2.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:communications_offline_mediation_controller:12.0.0.3.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:communications_pricing_design_center:12.0.0.3.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:enterprise_manager_ops_center:12.4.0.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Jul. 25, 2022

    Action Type Old Value New Value
    Added Reference https://www.oracle.com/security-alerts/cpujul2022.html [No Types Assigned]
  • Modified Analysis by [email protected]

    Mar. 04, 2022

    Action Type Old Value New Value
    Changed Reference Type https://lists.debian.org/debian-lts-announce/2021/04/msg00005.html No Types Assigned https://lists.debian.org/debian-lts-announce/2021/04/msg00005.html Mailing List, Third Party Advisory
    Changed Reference Type https://lists.debian.org/debian-lts-announce/2022/02/msg00013.html No Types Assigned https://lists.debian.org/debian-lts-announce/2022/02/msg00013.html Mailing List, Third Party Advisory
    Changed Reference Type https://www.oracle.com//security-alerts/cpujul2021.html No Types Assigned https://www.oracle.com//security-alerts/cpujul2021.html Patch, Third Party Advisory
    Changed Reference Type https://www.oracle.com/security-alerts/cpujan2022.html No Types Assigned https://www.oracle.com/security-alerts/cpujan2022.html Patch, Third Party Advisory
    Changed Reference Type https://www.oracle.com/security-alerts/cpuoct2021.html No Types Assigned https://www.oracle.com/security-alerts/cpuoct2021.html Patch, Third Party Advisory
    Changed CPE Configuration OR *cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:* OR *cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:linux:*:* *cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vsphere:*:* *cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:windows:*:* *cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:a:oracle:communications_offline_mediation_controller:12.0.0.3.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:communications_pricing_design_center:12.0.0.3.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:enterprise_manager_ops_center:12.4.0.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Feb. 14, 2022

    Action Type Old Value New Value
    Added Reference https://lists.debian.org/debian-lts-announce/2022/02/msg00013.html [No Types Assigned]
  • CVE Modified by [email protected]

    Feb. 07, 2022

    Action Type Old Value New Value
    Added Reference https://www.oracle.com/security-alerts/cpujan2022.html [No Types Assigned]
  • CVE Modified by [email protected]

    Oct. 20, 2021

    Action Type Old Value New Value
    Added Reference https://www.oracle.com/security-alerts/cpuoct2021.html [No Types Assigned]
  • CVE Modified by [email protected]

    Jul. 20, 2021

    Action Type Old Value New Value
    Added Reference https://www.oracle.com//security-alerts/cpujul2021.html [No Types Assigned]
  • CVE Modified by [email protected]

    Apr. 05, 2021

    Action Type Old Value New Value
    Added Reference https://lists.debian.org/debian-lts-announce/2021/04/msg00005.html [No Types Assigned]
  • Modified Analysis by [email protected]

    Mar. 19, 2021

    Action Type Old Value New Value
    Changed Reference Type https://bugs.python.org/issue42938 Exploit, Patch, Vendor Advisory https://bugs.python.org/issue42938 Exploit, Issue Tracking, Patch, Vendor Advisory
    Changed Reference Type https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772@%3Cdev.mina.apache.org%3E No Types Assigned https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772@%3Cdev.mina.apache.org%3E Mailing List, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/FONHJIOZOFD7CD35KZL6SVBUTMBPGZGA/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/FONHJIOZOFD7CD35KZL6SVBUTMBPGZGA/ Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/HCQTCSP6SCVIYNIRUJC5X7YBVUHPLSC4/ Mailing List, Third Party Advisory https://lists.fedoraproject.org/archives/list/[email protected]/message/HCQTCSP6SCVIYNIRUJC5X7YBVUHPLSC4/ Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/MP572OLHMS7MZO4KUPSCIMSZIA5IZZ62/ Mailing List, Third Party Advisory https://lists.fedoraproject.org/archives/list/[email protected]/message/MP572OLHMS7MZO4KUPSCIMSZIA5IZZ62/ Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/NODWHDIFBQE5RU5PUWUVE47JOT5VCMJ2/ Mailing List, Third Party Advisory https://lists.fedoraproject.org/archives/list/[email protected]/message/NODWHDIFBQE5RU5PUWUVE47JOT5VCMJ2/ Third Party Advisory
    Changed Reference Type https://security.netapp.com/advisory/ntap-20210226-0003/ No Types Assigned https://security.netapp.com/advisory/ntap-20210226-0003/ Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Feb. 26, 2021

    Action Type Old Value New Value
    Added Reference https://security.netapp.com/advisory/ntap-20210226-0003/ [No Types Assigned]
  • CVE Modified by [email protected]

    Feb. 26, 2021

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/FONHJIOZOFD7CD35KZL6SVBUTMBPGZGA/ [No Types Assigned]
  • CVE Modified by [email protected]

    Feb. 25, 2021

    Action Type Old Value New Value
    Added Reference https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772@%3Cdev.mina.apache.org%3E [No Types Assigned]
  • Modified Analysis by [email protected]

    Feb. 25, 2021

    Action Type Old Value New Value
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/BRHOCQYX3QLDGDQGTWQAUUT2GGIZCZUO/ Mailing List, Third Party Advisory https://lists.fedoraproject.org/archives/list/[email protected]/message/BRHOCQYX3QLDGDQGTWQAUUT2GGIZCZUO/ Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/CCFZMVRQUKCBQIG5F2CBVADK63NFSE4A/ Mailing List, Third Party Advisory https://lists.fedoraproject.org/archives/list/[email protected]/message/CCFZMVRQUKCBQIG5F2CBVADK63NFSE4A/ Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/FPE7SMXYUIWPOIZV4DQYXODRXMFX3C5E/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/FPE7SMXYUIWPOIZV4DQYXODRXMFX3C5E/ Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/HCQTCSP6SCVIYNIRUJC5X7YBVUHPLSC4/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/HCQTCSP6SCVIYNIRUJC5X7YBVUHPLSC4/ Mailing List, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/MGSV6BJQLRQ6RKVUXK7JGU7TP4QFGQXC/ Mailing List, Third Party Advisory https://lists.fedoraproject.org/archives/list/[email protected]/message/MGSV6BJQLRQ6RKVUXK7JGU7TP4QFGQXC/ Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/MP572OLHMS7MZO4KUPSCIMSZIA5IZZ62/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/MP572OLHMS7MZO4KUPSCIMSZIA5IZZ62/ Mailing List, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/NODWHDIFBQE5RU5PUWUVE47JOT5VCMJ2/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/NODWHDIFBQE5RU5PUWUVE47JOT5VCMJ2/ Mailing List, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/NQPARTLNSFQVMMQHPNBFOCOZOO3TMQNA/ Mailing List, Third Party Advisory https://lists.fedoraproject.org/archives/list/[email protected]/message/NQPARTLNSFQVMMQHPNBFOCOZOO3TMQNA/ Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/NXSMBHES3ANXXS2RSO5G6Q24BR4B2PWK/ Mailing List, Third Party Advisory https://lists.fedoraproject.org/archives/list/[email protected]/message/NXSMBHES3ANXXS2RSO5G6Q24BR4B2PWK/ Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/V6XJAULOS5JVB2L67NCKKMJ5NTKZJBSD/ Mailing List, Third Party Advisory https://lists.fedoraproject.org/archives/list/[email protected]/message/V6XJAULOS5JVB2L67NCKKMJ5NTKZJBSD/ Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/Z7GZV74KM72O2PEJN2C4XP3V5Q5MZUOO/ Mailing List, Third Party Advisory https://lists.fedoraproject.org/archives/list/[email protected]/message/Z7GZV74KM72O2PEJN2C4XP3V5Q5MZUOO/ Third Party Advisory
    Changed Reference Type https://news.ycombinator.com/item?id=26185005 No Types Assigned https://news.ycombinator.com/item?id=26185005 Third Party Advisory
  • CVE Modified by [email protected]

    Feb. 24, 2021

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/MP572OLHMS7MZO4KUPSCIMSZIA5IZZ62/ [No Types Assigned]
  • CVE Modified by [email protected]

    Feb. 20, 2021

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/HCQTCSP6SCVIYNIRUJC5X7YBVUHPLSC4/ [No Types Assigned]
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/NODWHDIFBQE5RU5PUWUVE47JOT5VCMJ2/ [No Types Assigned]
  • CVE Modified by [email protected]

    Feb. 19, 2021

    Action Type Old Value New Value
    Added Reference https://news.ycombinator.com/item?id=26185005 [No Types Assigned]
  • CVE Modified by [email protected]

    Feb. 13, 2021

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/FPE7SMXYUIWPOIZV4DQYXODRXMFX3C5E/ [No Types Assigned]
  • Modified Analysis by [email protected]

    Feb. 11, 2021

    Action Type Old Value New Value
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/BRHOCQYX3QLDGDQGTWQAUUT2GGIZCZUO/ Third Party Advisory https://lists.fedoraproject.org/archives/list/[email protected]/message/BRHOCQYX3QLDGDQGTWQAUUT2GGIZCZUO/ Mailing List, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/CCFZMVRQUKCBQIG5F2CBVADK63NFSE4A/ Third Party Advisory https://lists.fedoraproject.org/archives/list/[email protected]/message/CCFZMVRQUKCBQIG5F2CBVADK63NFSE4A/ Mailing List, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/MGSV6BJQLRQ6RKVUXK7JGU7TP4QFGQXC/ Third Party Advisory https://lists.fedoraproject.org/archives/list/[email protected]/message/MGSV6BJQLRQ6RKVUXK7JGU7TP4QFGQXC/ Mailing List, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/NQPARTLNSFQVMMQHPNBFOCOZOO3TMQNA/ Third Party Advisory https://lists.fedoraproject.org/archives/list/[email protected]/message/NQPARTLNSFQVMMQHPNBFOCOZOO3TMQNA/ Mailing List, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/NXSMBHES3ANXXS2RSO5G6Q24BR4B2PWK/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/NXSMBHES3ANXXS2RSO5G6Q24BR4B2PWK/ Mailing List, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/V6XJAULOS5JVB2L67NCKKMJ5NTKZJBSD/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/V6XJAULOS5JVB2L67NCKKMJ5NTKZJBSD/ Mailing List, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/Y4KSYYWMGAKOA2JVCQA422OINT6CKQ7O/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/Y4KSYYWMGAKOA2JVCQA422OINT6CKQ7O/ Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/YDTZVGSXQ7HR7OCGSUHTRNTMBG43OMKU/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/YDTZVGSXQ7HR7OCGSUHTRNTMBG43OMKU/ Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/Z7GZV74KM72O2PEJN2C4XP3V5Q5MZUOO/ Third Party Advisory https://lists.fedoraproject.org/archives/list/[email protected]/message/Z7GZV74KM72O2PEJN2C4XP3V5Q5MZUOO/ Mailing List, Third Party Advisory
  • CVE Modified by [email protected]

    Feb. 11, 2021

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/YDTZVGSXQ7HR7OCGSUHTRNTMBG43OMKU/ [No Types Assigned]
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/Y4KSYYWMGAKOA2JVCQA422OINT6CKQ7O/ [No Types Assigned]
  • CVE Modified by [email protected]

    Feb. 07, 2021

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/NXSMBHES3ANXXS2RSO5G6Q24BR4B2PWK/ [No Types Assigned]
  • CVE Modified by [email protected]

    Feb. 06, 2021

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/V6XJAULOS5JVB2L67NCKKMJ5NTKZJBSD/ [No Types Assigned]
  • Modified Analysis by [email protected]

    Feb. 01, 2021

    Action Type Old Value New Value
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/BRHOCQYX3QLDGDQGTWQAUUT2GGIZCZUO/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/BRHOCQYX3QLDGDQGTWQAUUT2GGIZCZUO/ Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/CCFZMVRQUKCBQIG5F2CBVADK63NFSE4A/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/CCFZMVRQUKCBQIG5F2CBVADK63NFSE4A/ Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/MGSV6BJQLRQ6RKVUXK7JGU7TP4QFGQXC/ Mailing List, Third Party Advisory https://lists.fedoraproject.org/archives/list/[email protected]/message/MGSV6BJQLRQ6RKVUXK7JGU7TP4QFGQXC/ Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/NQPARTLNSFQVMMQHPNBFOCOZOO3TMQNA/ Mailing List, Third Party Advisory https://lists.fedoraproject.org/archives/list/[email protected]/message/NQPARTLNSFQVMMQHPNBFOCOZOO3TMQNA/ Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/Z7GZV74KM72O2PEJN2C4XP3V5Q5MZUOO/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/Z7GZV74KM72O2PEJN2C4XP3V5Q5MZUOO/ Third Party Advisory
    Changed CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* OR *cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Jan. 30, 2021

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/CCFZMVRQUKCBQIG5F2CBVADK63NFSE4A/ [No Types Assigned]
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/BRHOCQYX3QLDGDQGTWQAUUT2GGIZCZUO/ [No Types Assigned]
  • CVE Modified by [email protected]

    Jan. 29, 2021

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/Z7GZV74KM72O2PEJN2C4XP3V5Q5MZUOO/ [No Types Assigned]
  • Initial Analysis by [email protected]

    Jan. 28, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://bugs.python.org/issue42938 No Types Assigned https://bugs.python.org/issue42938 Exploit, Patch, Vendor Advisory
    Changed Reference Type https://github.com/python/cpython/pull/24239 No Types Assigned https://github.com/python/cpython/pull/24239 Patch, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/MGSV6BJQLRQ6RKVUXK7JGU7TP4QFGQXC/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/MGSV6BJQLRQ6RKVUXK7JGU7TP4QFGQXC/ Mailing List, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/NQPARTLNSFQVMMQHPNBFOCOZOO3TMQNA/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/NQPARTLNSFQVMMQHPNBFOCOZOO3TMQNA/ Mailing List, Third Party Advisory
    Changed Reference Type https://python-security.readthedocs.io/vuln/ctypes-buffer-overflow-pycarg_repr.html No Types Assigned https://python-security.readthedocs.io/vuln/ctypes-buffer-overflow-pycarg_repr.html Patch, Third Party Advisory
    Changed Reference Type https://security.gentoo.org/glsa/202101-18 No Types Assigned https://security.gentoo.org/glsa/202101-18 Third Party Advisory
    Added CWE NIST CWE-120
    Added CPE Configuration OR *cpe:2.3:a:python:python:*:*:*:*:*:*:*:* versions from (including) 3.6.0 up to (including) 3.6.12 *cpe:2.3:a:python:python:*:*:*:*:*:*:*:* versions from (including) 3.7.0 up to (including) 3.7.9 *cpe:2.3:a:python:python:*:*:*:*:*:*:*:* versions from (including) 3.8.0 up to (including) 3.8.7 *cpe:2.3:a:python:python:*:*:*:*:*:*:*:* versions from (including) 3.9.0 up to (including) 3.9.1
    Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Jan. 26, 2021

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/NQPARTLNSFQVMMQHPNBFOCOZOO3TMQNA/ [No Types Assigned]
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/MGSV6BJQLRQ6RKVUXK7JGU7TP4QFGQXC/ [No Types Assigned]
    Added Reference https://security.gentoo.org/glsa/202101-18 [No Types Assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-3177 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-3177 weaknesses.

CAPEC-8: Buffer Overflow in an API Call Buffer Overflow in an API Call CAPEC-9: Buffer Overflow in Local Command-Line Utilities Buffer Overflow in Local Command-Line Utilities CAPEC-10: Buffer Overflow via Environment Variables Buffer Overflow via Environment Variables CAPEC-14: Client-side Injection-induced Buffer Overflow Client-side Injection-induced Buffer Overflow CAPEC-24: Filter Failure through Buffer Overflow Filter Failure through Buffer Overflow CAPEC-42: MIME Conversion MIME Conversion CAPEC-44: Overflow Binary Resource File Overflow Binary Resource File CAPEC-45: Buffer Overflow via Symbolic Links Buffer Overflow via Symbolic Links CAPEC-46: Overflow Variables and Tags Overflow Variables and Tags CAPEC-47: Buffer Overflow via Parameter Expansion Buffer Overflow via Parameter Expansion CAPEC-67: String Format Overflow in syslog() String Format Overflow in syslog() CAPEC-92: Forced Integer Overflow Forced Integer Overflow CAPEC-100: Overflow Buffers Overflow Buffers
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

3.10 }} -0.74%

score

0.91228

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
: