5.9
MEDIUM
CVE-2021-23841
OpenSSL X509_issuer_and_serial_hash Denial of Service
Description

The OpenSSL public API function X509_issuer_and_serial_hash() attempts to create a unique hash value based on the issuer and serial number data contained within an X509 certificate. However it fails to correctly handle any errors that may occur while parsing the issuer field (which might occur if the issuer field is maliciously constructed). This may subsequently result in a NULL pointer deref and a crash leading to a potential denial of service attack. The function X509_issuer_and_serial_hash() is never directly called by OpenSSL itself so applications are only vulnerable if they use this function directly and they use it on certificates that may have been obtained from untrusted sources. OpenSSL versions 1.1.1i and below are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1j. OpenSSL versions 1.0.2x and below are affected by this issue. However OpenSSL 1.0.2 is out of support and no longer receiving public updates. Premium support customers of OpenSSL 1.0.2 should upgrade to 1.0.2y. Other users should upgrade to 1.1.1j. Fixed in OpenSSL 1.1.1j (Affected 1.1.1-1.1.1i). Fixed in OpenSSL 1.0.2y (Affected 1.0.2-1.0.2x).

INFO

Published Date :

Feb. 16, 2021, 5:15 p.m.

Last Modified :

June 21, 2024, 7:15 p.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

2.2
Public PoC/Exploit Available at Github

CVE-2021-23841 has a 18 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-2021-23841 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 business_intelligence
3 Oracle peoplesoft_enterprise_peopletools
4 Oracle enterprise_manager_ops_center
5 Oracle mysql_enterprise_monitor
6 Oracle communications_cloud_native_core_policy
7 Oracle essbase
8 Oracle graalvm
9 Oracle mysql_server
10 Oracle enterprise_manager_for_storage_management
11 Oracle jd_edwards_world_security
1 Apple macos
2 Apple iphone_os
3 Apple safari
4 Apple ipados
1 Netapp oncommand_insight
2 Netapp oncommand_workflow_automation
3 Netapp snapcenter
1 Tenable tenable.sc
2 Tenable nessus_network_monitor
1 Debian debian_linux
1 Openssl openssl
1 Siemens sinec_ins
: Total Affected Vendor : 7 | Products : 23
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-2021-23841.

URL Resource
http://seclists.org/fulldisclosure/2021/May/67 Mailing List Third Party Advisory
http://seclists.org/fulldisclosure/2021/May/68 Mailing List Third Party Advisory
http://seclists.org/fulldisclosure/2021/May/70 Mailing List Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-637483.pdf Patch Third Party Advisory
https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=122a19ab48091c657f7cb1fb3af9fc07bd557bbf
https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=8252ee4d90f3f2004d3d0aeeed003ad49c9a7807
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44846 Third Party Advisory
https://security.gentoo.org/glsa/202103-03 Third Party Advisory
https://security.netapp.com/advisory/ntap-20210219-0009/ Third Party Advisory
https://security.netapp.com/advisory/ntap-20210513-0002/ Third Party Advisory
https://security.netapp.com/advisory/ntap-20240621-0006/
https://support.apple.com/kb/HT212528 Third Party Advisory
https://support.apple.com/kb/HT212529 Third Party Advisory
https://support.apple.com/kb/HT212534 Third Party Advisory
https://www.debian.org/security/2021/dsa-4855 Third Party Advisory
https://www.openssl.org/news/secadv/20210216.txt Vendor Advisory
https://www.oracle.com//security-alerts/cpujul2021.html Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpuApr2021.html Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.html Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpuoct2021.html Patch Third Party Advisory
https://www.tenable.com/security/tns-2021-03 Third Party Advisory
https://www.tenable.com/security/tns-2021-09 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
NaInSec/CVE-PoC-in-GitHub

All CVE - PoC in GitHub

poc proofofconcept tester allcve cvegithub cvenew cvepoc cveupdate

Updated: 3 weeks ago
5 stars 2 fork 2 watcher
Born at : March 22, 2024, 3:58 p.m. This repo has been linked 928 different CVEs too.
Profile Photo
zecool/cve

None

Updated: 6 months ago
1 stars 0 fork 0 watcher
Born at : March 11, 2024, 1:21 p.m. This repo has been linked 930 different CVEs too.
Profile Photo
fredrkl/trivy-demo

Demo repository showcasing some of the possibilities of Aqua Trivy.

cncf-demo trivy

Dockerfile Shell

Updated: 1 year, 1 month ago
0 stars 0 fork 0 watcher
Born at : May 6, 2023, 9:42 a.m. This repo has been linked 27 different CVEs too.
Profile Photo
whoforget/CVE-POC

None

Updated: 1 year, 5 months ago
0 stars 2 fork 2 watcher
Born at : April 8, 2023, 6:19 a.m. This repo has been linked 923 different CVEs too.
Profile Photo
chnzzh/OpenSSL-CVE-lib

None

Updated: 1 week, 2 days ago
5 stars 0 fork 0 watcher
Born at : Feb. 23, 2023, 5:42 a.m. This repo has been linked 455 different CVEs too.
Profile Photo
k0mi-tg/CVE-POC

None

Updated: 7 months ago
20 stars 3 fork 3 watcher
Born at : Feb. 14, 2023, 6:10 p.m. This repo has been linked 921 different CVEs too.
Profile Photo
WhooAmii/POC_to_review

None

Updated: 6 months, 4 weeks ago
2 stars 2 fork 2 watcher
Born at : Nov. 25, 2022, 5:43 p.m. This repo has been linked 930 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, 8 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
Satheesh575555/Openssl_1_1_0_CVE-2021-23841

None

Shell Perl DIGITAL Command Language C Assembly M4 eC Python

Updated: 1 year, 5 months ago
0 stars 0 fork 0 watcher
Born at : Aug. 5, 2022, 10:52 a.m. This repo has been linked 1 different CVEs too.
Profile Photo
thecyberbaby/Trivy-by-AquaSecurity

A security framework by Aquasecurity

Updated: 2 years, 2 months ago
0 stars 0 fork 0 watcher
Born at : June 22, 2022, 10:40 a.m. This repo has been linked 16 different CVEs too.
Profile Photo
Trinadh465/external_boringssl_openssl_1.1.0g_CVE-2021-23841

None

Shell Perl DIGITAL Command Language C Assembly M4 eC Python

Updated: 1 year, 5 months ago
0 stars 0 fork 0 watcher
Born at : April 29, 2022, 10:16 a.m. This repo has been linked 1 different CVEs too.
Profile Photo
arindam0310018/04-Apr-2022-DevOps__Scan-Images-In-ACR-Using-Trivy

DEVOPS + ACR + TRIVY

azure azurecontainerregistry devops devops-pipeline powershell

Dockerfile HTML

Updated: 7 months ago
5 stars 8 fork 8 watcher
Born at : April 4, 2022, 1:59 p.m. This repo has been linked 19 different CVEs too.
Profile Photo
fdl66/openssl-1.0.2u-fix-cve

本项目旨在解决openssl1.0.2u的漏洞问题。（1.0.2官方不在维护，所以，相关的漏洞修复代码都已经闭源，此处是从相近版本合入的代码， 源码来源：https://github.com/openssl/openssl/tree/OpenSSL_1_0_2u）

Shell C++ C Batchfile Perl DIGITAL Command Language Makefile Assembly XS M4

Updated: 1 month, 3 weeks ago
10 stars 4 fork 4 watcher
Born at : April 3, 2022, 12:51 p.m. This repo has been linked 9 different CVEs too.
Profile Photo
jntass/TASSL-1.1.1k

此仓库已停止维护，请移步https://github.com/jntass/TASSL-1.1.1

Perl DIGITAL Command Language C Shell Assembly M4 eC Python C++ sed

Updated: 6 months, 1 week ago
54 stars 16 fork 16 watcher
Born at : Nov. 24, 2021, 6:39 a.m. This repo has been linked 13 different CVEs too.
Profile Photo
vinamra28/tekton-image-scan-trivy

None

Go

Updated: 2 years, 11 months ago
0 stars 0 fork 0 watcher
Born at : Sept. 26, 2021, 12:33 p.m. This repo has been linked 17 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-2021-23841 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-23841 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]

    Jun. 21, 2024

    Action Type Old Value New Value
    Added Reference OpenSSL Software Foundation https://security.netapp.com/advisory/ntap-20240621-0006/ [No types assigned]
  • 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 OpenSSL Software Foundation https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=122a19ab48091c657f7cb1fb3af9fc07bd557bbf [No types assigned]
    Added Reference OpenSSL Software Foundation https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=8252ee4d90f3f2004d3d0aeeed003ad49c9a7807 [No types assigned]
    Removed Reference OpenSSL Software Foundation https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=8252ee4d90f3f2004d3d0aeeed003ad49c9a7807
    Removed Reference OpenSSL Software Foundation https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=122a19ab48091c657f7cb1fb3af9fc07bd557bbf
  • CPE Deprecation Remap by [email protected]

    Jan. 09, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:o:apple:ipad_os:*:*:*:*:*:*:*:* versions from (excluding) 14.6 OR *cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* versions from (excluding) 14.6
  • Modified Analysis by [email protected]

    Oct. 07, 2022

    Action Type Old Value New Value
    Changed Reference Type https://cert-portal.siemens.com/productcert/pdf/ssa-637483.pdf No Types Assigned https://cert-portal.siemens.com/productcert/pdf/ssa-637483.pdf Patch, Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:a:siemens:sinec_ins:*:*:*:*:*:*:*:* versions up to (excluding) 1.0 *cpe:2.3:a:siemens:sinec_ins:1.0:-:*:*:*:*:*:* *cpe:2.3:a:siemens:sinec_ins:1.0:sp1:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Sep. 13, 2022

    Action Type Old Value New Value
    Added Reference https://cert-portal.siemens.com/productcert/pdf/ssa-637483.pdf [No Types Assigned]
  • Modified Analysis by [email protected]

    May. 12, 2022

    Action Type Old Value New Value
    Changed Reference Type https://www.oracle.com/security-alerts/cpuapr2022.html No Types Assigned https://www.oracle.com/security-alerts/cpuapr2022.html Patch, Third Party Advisory
    Changed CPE Configuration OR *cpe:2.3:a:oracle:business_intelligence:5.5.0.0.0:*:*:*:enterprise:*:*:* *cpe:2.3:a:oracle:business_intelligence:5.9.0.0.0:*:*:*:enterprise:*:*:* *cpe:2.3:a:oracle:business_intelligence:12.2.1.3.0:*:*:*:enterprise:*:*:* *cpe:2.3:a:oracle:business_intelligence:12.2.1.4.0:*:*:*:enterprise:*:*:* *cpe:2.3:a:oracle:enterprise_manager_ops_center:12.4.0.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:essbase:21.2:*:*:*:*:*:*:* *cpe:2.3:a:oracle:graalvm:19.3.5:*:*:*:enterprise:*:*:* *cpe:2.3:a:oracle:graalvm:20.3.1.2:*:*:*:enterprise:*:*:* *cpe:2.3:a:oracle:graalvm:21.0.0.2:*:*:*:enterprise:*:*:* *cpe:2.3:a:oracle:jd_edwards_world_security:a9.4:*:*:*:*:*:*:* *cpe:2.3:a:oracle:mysql_enterprise_monitor:*:*:*:*:*:*:*:* versions up to (excluding) 8.0.23 *cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:* versions up to (excluding) 5.7.33 *cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:* versions from (including) 8.0.15 up to (excluding) 8.0.23 *cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.57:*:*:*:*:*:*:* *cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.58:*:*:*:*:*:*:* *cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.59:*:*:*:*:*:*:* *cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:* OR *cpe:2.3:a:oracle:business_intelligence:5.5.0.0.0:*:*:*:enterprise:*:*:* *cpe:2.3:a:oracle:business_intelligence:5.9.0.0.0:*:*:*:enterprise:*:*:* *cpe:2.3:a:oracle:business_intelligence:12.2.1.3.0:*:*:*:enterprise:*:*:* *cpe:2.3:a:oracle:business_intelligence:12.2.1.4.0:*:*:*:enterprise:*:*:* *cpe:2.3:a:oracle:communications_cloud_native_core_policy:1.15.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:enterprise_manager_for_storage_management:13.4.0.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:enterprise_manager_ops_center:12.4.0.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:essbase:21.2:*:*:*:*:*:*:* *cpe:2.3:a:oracle:graalvm:19.3.5:*:*:*:enterprise:*:*:* *cpe:2.3:a:oracle:graalvm:20.3.1.2:*:*:*:enterprise:*:*:* *cpe:2.3:a:oracle:graalvm:21.0.0.2:*:*:*:enterprise:*:*:* *cpe:2.3:a:oracle:jd_edwards_world_security:a9.4:*:*:*:*:*:*:* *cpe:2.3:a:oracle:mysql_enterprise_monitor:*:*:*:*:*:*:*:* versions up to (excluding) 8.0.23 *cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:* versions up to (excluding) 5.7.33 *cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:* versions from (including) 8.0.15 up to (excluding) 8.0.23 *cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.57:*:*:*:*:*:*:* *cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.58:*:*:*:*:*:*:* *cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.59:*:*:*:*:*:*:* *cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:*
  • CWE Remap by [email protected]

    May. 03, 2022

    Action Type Old Value New Value
    Changed CWE CWE-190 CWE-476
  • CVE Modified by [email protected]

    Apr. 20, 2022

    Action Type Old Value New Value
    Added Reference https://www.oracle.com/security-alerts/cpuapr2022.html [No Types Assigned]
  • Modified Analysis by [email protected]

    Dec. 10, 2021

    Action Type Old Value New Value
    Changed Reference Type https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44846 No Types Assigned https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44846 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/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:oracle:enterprise_manager_ops_center:12.4.0.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:graalvm:19.3.5:*:*:*:enterprise:*:*:* *cpe:2.3:a:oracle:graalvm:20.3.1.2:*:*:*:enterprise:*:*:* *cpe:2.3:a:oracle:graalvm:21.0.0.2:*:*:*:enterprise:*:*:* *cpe:2.3:a:oracle:mysql_enterprise_monitor:*:*:*:*:*:*:*:* versions up to (excluding) 8.0.23 *cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:* versions up to (excluding) 5.7.33 *cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:* versions from (including) 8.0.15 up to (excluding) 8.0.23 OR *cpe:2.3:a:oracle:business_intelligence:5.5.0.0.0:*:*:*:enterprise:*:*:* *cpe:2.3:a:oracle:business_intelligence:5.9.0.0.0:*:*:*:enterprise:*:*:* *cpe:2.3:a:oracle:business_intelligence:12.2.1.3.0:*:*:*:enterprise:*:*:* *cpe:2.3:a:oracle:business_intelligence:12.2.1.4.0:*:*:*:enterprise:*:*:* *cpe:2.3:a:oracle:enterprise_manager_ops_center:12.4.0.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:essbase:21.2:*:*:*:*:*:*:* *cpe:2.3:a:oracle:graalvm:19.3.5:*:*:*:enterprise:*:*:* *cpe:2.3:a:oracle:graalvm:20.3.1.2:*:*:*:enterprise:*:*:* *cpe:2.3:a:oracle:graalvm:21.0.0.2:*:*:*:enterprise:*:*:* *cpe:2.3:a:oracle:jd_edwards_world_security:a9.4:*:*:*:*:*:*:* *cpe:2.3:a:oracle:mysql_enterprise_monitor:*:*:*:*:*:*:*:* versions up to (excluding) 8.0.23 *cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:* versions up to (excluding) 5.7.33 *cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:* versions from (including) 8.0.15 up to (excluding) 8.0.23 *cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.57:*:*:*:*:*:*:* *cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.58:*:*:*:*:*:*:* *cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.59:*:*:*:*:*:*:* *cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:*
  • 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]

    Jul. 14, 2021

    Action Type Old Value New Value
    Added Reference https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44846 [No Types Assigned]
  • Modified Analysis by [email protected]

    Jun. 17, 2021

    Action Type Old Value New Value
    Changed Reference Type http://seclists.org/fulldisclosure/2021/May/67 No Types Assigned http://seclists.org/fulldisclosure/2021/May/67 Mailing List, Third Party Advisory
    Changed Reference Type http://seclists.org/fulldisclosure/2021/May/68 No Types Assigned http://seclists.org/fulldisclosure/2021/May/68 Mailing List, Third Party Advisory
    Changed Reference Type http://seclists.org/fulldisclosure/2021/May/70 No Types Assigned http://seclists.org/fulldisclosure/2021/May/70 Mailing List, Third Party Advisory
    Changed Reference Type https://www.oracle.com/security-alerts/cpuApr2021.html No Types Assigned https://www.oracle.com/security-alerts/cpuApr2021.html Patch, Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:a:oracle:enterprise_manager_ops_center:12.4.0.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:graalvm:19.3.5:*:*:*:enterprise:*:*:* *cpe:2.3:a:oracle:graalvm:20.3.1.2:*:*:*:enterprise:*:*:* *cpe:2.3:a:oracle:graalvm:21.0.0.2:*:*:*:enterprise:*:*:* *cpe:2.3:a:oracle:mysql_enterprise_monitor:*:*:*:*:*:*:*:* versions up to (excluding) 8.0.23 *cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:* versions up to (excluding) 5.7.33 *cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:* versions from (including) 8.0.15 up to (excluding) 8.0.23
  • CVE Modified by [email protected]

    Jun. 14, 2021

    Action Type Old Value New Value
    Added Reference https://www.oracle.com/security-alerts/cpuApr2021.html [No Types Assigned]
  • CVE Modified by [email protected]

    May. 26, 2021

    Action Type Old Value New Value
    Added Reference http://seclists.org/fulldisclosure/2021/May/68 [No Types Assigned]
    Added Reference http://seclists.org/fulldisclosure/2021/May/67 [No Types Assigned]
    Added Reference http://seclists.org/fulldisclosure/2021/May/70 [No Types Assigned]
  • Modified Analysis by [email protected]

    May. 26, 2021

    Action Type Old Value New Value
    Changed Reference Type https://security.gentoo.org/glsa/202103-03 No Types Assigned https://security.gentoo.org/glsa/202103-03 Third Party Advisory
    Changed Reference Type https://security.netapp.com/advisory/ntap-20210513-0002/ No Types Assigned https://security.netapp.com/advisory/ntap-20210513-0002/ Third Party Advisory
    Changed Reference Type https://support.apple.com/kb/HT212528 No Types Assigned https://support.apple.com/kb/HT212528 Third Party Advisory
    Changed Reference Type https://support.apple.com/kb/HT212529 No Types Assigned https://support.apple.com/kb/HT212529 Third Party Advisory
    Changed Reference Type https://support.apple.com/kb/HT212534 No Types Assigned https://support.apple.com/kb/HT212534 Third Party Advisory
    Changed Reference Type https://www.tenable.com/security/tns-2021-09 No Types Assigned https://www.tenable.com/security/tns-2021-09 Third Party Advisory
    Changed CPE Configuration OR *cpe:2.3:a:tenable:tenable.sc:*:*:*:*:*:*:*:* versions from (including) 5.13.0 up to (including) 5.17.0 OR *cpe:2.3:a:tenable:nessus_network_monitor:5.11.0:*:*:*:*:*:*:* *cpe:2.3:a:tenable:nessus_network_monitor:5.11.1:*:*:*:*:*:*:* *cpe:2.3:a:tenable:nessus_network_monitor:5.12.0:*:*:*:*:*:*:* *cpe:2.3:a:tenable:nessus_network_monitor:5.12.1:*:*:*:*:*:*:* *cpe:2.3:a:tenable:nessus_network_monitor:5.13.0:*:*:*:*:*:*:* *cpe:2.3:a:tenable:tenable.sc:*:*:*:*:*:*:*:* versions from (including) 5.13.0 up to (including) 5.17.0
    Added CPE Configuration OR *cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:* versions up to (excluding) 14.1.1 *cpe:2.3:o:apple:ipad_os:*:*:*:*:*:*:*:* versions up to (excluding) 14.6 *cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* versions up to (excluding) 14.6 *cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* versions from (including) 11.1 up to (excluding) 11.4
    Added CPE Configuration OR *cpe:2.3:a:netapp:oncommand_insight:-:*:*:*:*:*:*:* *cpe:2.3:a:netapp:oncommand_workflow_automation:-:*:*:*:*:*:*:* *cpe:2.3:a:netapp:snapcenter:-:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    May. 25, 2021

    Action Type Old Value New Value
    Added Reference https://support.apple.com/kb/HT212528 [No Types Assigned]
    Added Reference https://support.apple.com/kb/HT212534 [No Types Assigned]
  • CVE Modified by [email protected]

    May. 24, 2021

    Action Type Old Value New Value
    Added Reference https://support.apple.com/kb/HT212529 [No Types Assigned]
  • CVE Modified by [email protected]

    May. 13, 2021

    Action Type Old Value New Value
    Added Reference https://security.netapp.com/advisory/ntap-20210513-0002/ [No Types Assigned]
  • CVE Modified by [email protected]

    May. 11, 2021

    Action Type Old Value New Value
    Added Reference https://www.tenable.com/security/tns-2021-09 [No Types Assigned]
  • CVE Modified by [email protected]

    Mar. 31, 2021

    Action Type Old Value New Value
    Added Reference https://security.gentoo.org/glsa/202103-03 [No Types Assigned]
  • Modified Analysis by [email protected]

    Mar. 10, 2021

    Action Type Old Value New Value
    Removed CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P)
    Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:N/I:N/A:P)
    Removed CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Added CVSS V3.1 NIST AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type https://www.tenable.com/security/tns-2021-03 No Types Assigned https://www.tenable.com/security/tns-2021-03 Third Party Advisory
    Changed CPE Configuration OR *cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* versions from (including) 1.0.2 up to (including) 1.0.2x OR *cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* versions from (including) 1.0.2 up to (excluding) 1.0.2y *cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* versions from (including) 1.1.1 up to (excluding) 1.1.1j
    Added CPE Configuration OR *cpe:2.3:a:tenable:tenable.sc:*:*:*:*:*:*:*:* versions from (including) 5.13.0 up to (including) 5.17.0
  • CVE Modified by [email protected]

    Mar. 02, 2021

    Action Type Old Value New Value
    Added Reference https://www.tenable.com/security/tns-2021-03 [No Types Assigned]
  • Initial Analysis by [email protected]

    Feb. 25, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=122a19ab48091c657f7cb1fb3af9fc07bd557bbf No Types Assigned https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=122a19ab48091c657f7cb1fb3af9fc07bd557bbf Patch, Vendor Advisory
    Changed Reference Type https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=8252ee4d90f3f2004d3d0aeeed003ad49c9a7807 No Types Assigned https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=8252ee4d90f3f2004d3d0aeeed003ad49c9a7807 Vendor Advisory
    Changed Reference Type https://security.netapp.com/advisory/ntap-20210219-0009/ No Types Assigned https://security.netapp.com/advisory/ntap-20210219-0009/ Third Party Advisory
    Changed Reference Type https://www.debian.org/security/2021/dsa-4855 No Types Assigned https://www.debian.org/security/2021/dsa-4855 Third Party Advisory
    Changed Reference Type https://www.openssl.org/news/secadv/20210216.txt No Types Assigned https://www.openssl.org/news/secadv/20210216.txt Vendor Advisory
    Added CWE NIST CWE-190
    Added CPE Configuration OR *cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* versions from (including) 1.0.2 up to (including) 1.0.2x
    Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Feb. 19, 2021

    Action Type Old Value New Value
    Added Reference https://security.netapp.com/advisory/ntap-20210219-0009/ [No Types Assigned]
  • CVE Modified by [email protected]

    Feb. 18, 2021

    Action Type Old Value New Value
    Added Reference https://www.debian.org/security/2021/dsa-4855 [No Types Assigned]
  • CVE Modified by [email protected]

    Feb. 17, 2021

    Action Type Old Value New Value
    Changed Description Calls to EVP_CipherUpdate, EVP_EncryptUpdate and EVP_DecryptUpdate may overflow the output length argument in some cases where the input length is close to the maximum permissable length for an integer on the platform. In such cases the return value from the function call will be 1 (indicating success), but the output length value will be negative. This could cause applications to behave incorrectly or crash. OpenSSL versions 1.1.1i and below are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1j. OpenSSL versions 1.0.2x and below are affected by this issue. However OpenSSL 1.0.2 is out of support and no longer receiving public updates. Premium support customers of OpenSSL 1.0.2 should upgrade to 1.0.2y. Other users should upgrade to 1.1.1j. Fixed in OpenSSL 1.1.1j (Affected 1.1.1-1.1.1i). Fixed in OpenSSL 1.0.2y (Affected 1.0.2-1.0.2x). The OpenSSL public API function X509_issuer_and_serial_hash() attempts to create a unique hash value based on the issuer and serial number data contained within an X509 certificate. However it fails to correctly handle any errors that may occur while parsing the issuer field (which might occur if the issuer field is maliciously constructed). This may subsequently result in a NULL pointer deref and a crash leading to a potential denial of service attack. The function X509_issuer_and_serial_hash() is never directly called by OpenSSL itself so applications are only vulnerable if they use this function directly and they use it on certificates that may have been obtained from untrusted sources. OpenSSL versions 1.1.1i and below are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1j. OpenSSL versions 1.0.2x and below are affected by this issue. However OpenSSL 1.0.2 is out of support and no longer receiving public updates. Premium support customers of OpenSSL 1.0.2 should upgrade to 1.0.2y. Other users should upgrade to 1.1.1j. Fixed in OpenSSL 1.1.1j (Affected 1.1.1-1.1.1i). Fixed in OpenSSL 1.0.2y (Affected 1.0.2-1.0.2x).
    Removed Reference https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=6a51b9e1d0cf0bf8515f7201b68fb0a3482b3dc1 [No Types Assigned]
    Removed Reference https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=9b1129239f3ebb1d1c98ce9ed41d5c9476c47cb2 [No Types Assigned]
    Added Reference https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=8252ee4d90f3f2004d3d0aeeed003ad49c9a7807 [No Types Assigned]
    Added Reference https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=122a19ab48091c657f7cb1fb3af9fc07bd557bbf [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-2021-23841 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-2021-23841 weaknesses.

Exploit Prediction

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

0.42 }} 0.02%

score

0.73601

percentile

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