CVE-2020-29661
Linux Kernel TTY Use-After-Free Locking Vulnerability
Description
A locking issue was discovered in the tty subsystem of the Linux kernel through 5.9.13. drivers/tty/tty_jobctrl.c allows a use-after-free attack against TIOCSPGRP, aka CID-54ffccbf053b.
INFO
Published Date :
Dec. 9, 2020, 5:15 p.m.
Last Modified :
Nov. 7, 2023, 3:21 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.8
Public PoC/Exploit Available at Github
CVE-2020-29661 has a 3 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-2020-29661
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.
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-2020-29661.
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).
Using Dirty Pagetable technology to reproduce CVE-2020-29661
Shell
None
Makefile C
Map Vulnerabilities into Different Layers of the Container Image
Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-29661 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-29661 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/MZ7OAKAEFAXQRGBZK4LYUWINCD3D2XCL/ [No types assigned] Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BOB25SU6XUL4TNP7KB63WNZSYTIYFDPP/ [No types assigned] Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/BOB25SU6XUL4TNP7KB63WNZSYTIYFDPP/ Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/MZ7OAKAEFAXQRGBZK4LYUWINCD3D2XCL/ -
Reanalysis by [email protected]
Jan. 17, 2023
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (including) 5.9.13 OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 2.6.26 up to (excluding) 4.4.248 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.5 up to (excluding) 4.9.248 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.10 up to (excluding) 4.14.212 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.15 up to (excluding) 4.19.163 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 up to (excluding) 5.4.83 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.9.14 -
Modified Analysis by [email protected]
Nov. 30, 2021
Action Type Old Value New Value Changed Reference Type http://packetstormsecurity.com/files/164950/Kernel-Live-Patch-Security-Notice-LSN-0082-1.html No Types Assigned http://packetstormsecurity.com/files/164950/Kernel-Live-Patch-Security-Notice-LSN-0082-1.html Third Party Advisory, VDB Entry Changed Reference Type https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html No Types Assigned https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html Mailing List, Third Party Advisory Changed Reference Type https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html No Types Assigned https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html Mailing List, Third Party Advisory Changed Reference Type https://security.netapp.com/advisory/ntap-20210122-0001/ No Types Assigned https://security.netapp.com/advisory/ntap-20210122-0001/ Third Party Advisory Changed Reference Type https://www.debian.org/security/2021/dsa-4843 No Types Assigned https://www.debian.org/security/2021/dsa-4843 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 Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:* Added CPE Configuration OR *cpe:2.3:o:broadcom:fabric_operating_system:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netapp:solidfire_baseboard_management_controller_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:solidfire_baseboard_management_controller:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h410c:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netapp:a700s_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:a700s:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netapp:8300_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:8300:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netapp:8700_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:8700:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netapp:a400_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:a400:-:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:a:oracle:tekelec_platform_distribution:*:*:*:*:*:*:*:* versions from (including) 7.4.0 up to (including) 7.7.1 -
CVE Modified by [email protected]
Nov. 12, 2021
Action Type Old Value New Value Added Reference http://packetstormsecurity.com/files/164950/Kernel-Live-Patch-Security-Notice-LSN-0082-1.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]
Mar. 09, 2021
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html [No Types Assigned] -
CVE Modified by [email protected]
Feb. 12, 2021
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html [No Types Assigned] -
CVE Modified by [email protected]
Feb. 02, 2021
Action Type Old Value New Value Added Reference https://www.debian.org/security/2021/dsa-4843 [No Types Assigned] -
CVE Modified by [email protected]
Jan. 26, 2021
Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20210122-0001/ [No Types Assigned] -
Modified Analysis by [email protected]
Dec. 23, 2020
Action Type Old Value New Value Changed Reference Type http://packetstormsecurity.com/files/160681/Linux-TIOCSPGRP-Broken-Locking.html No Types Assigned http://packetstormsecurity.com/files/160681/Linux-TIOCSPGRP-Broken-Locking.html Third Party Advisory, VDB Entry Changed Reference Type http://www.openwall.com/lists/oss-security/2020/12/10/1 Patch, Third Party Advisory http://www.openwall.com/lists/oss-security/2020/12/10/1 Mailing List, Patch, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/BOB25SU6XUL4TNP7KB63WNZSYTIYFDPP/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/BOB25SU6XUL4TNP7KB63WNZSYTIYFDPP/ Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/MZ7OAKAEFAXQRGBZK4LYUWINCD3D2XCL/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/MZ7OAKAEFAXQRGBZK4LYUWINCD3D2XCL/ Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Dec. 22, 2020
Action Type Old Value New Value Added Reference http://packetstormsecurity.com/files/160681/Linux-TIOCSPGRP-Broken-Locking.html [No Types Assigned] -
CVE Modified by [email protected]
Dec. 17, 2020
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/BOB25SU6XUL4TNP7KB63WNZSYTIYFDPP/ [No Types Assigned] Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/MZ7OAKAEFAXQRGBZK4LYUWINCD3D2XCL/ [No Types Assigned] -
Initial Analysis by [email protected]
Dec. 11, 2020
Action Type Old Value New Value Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:C/I:C/A:C) Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type http://www.openwall.com/lists/oss-security/2020/12/10/1 No Types Assigned http://www.openwall.com/lists/oss-security/2020/12/10/1 Patch, Third Party Advisory Changed Reference Type https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=54ffccbf053b5b6ca4f6e45094b942fab92a25fc No Types Assigned https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=54ffccbf053b5b6ca4f6e45094b942fab92a25fc Patch, Vendor Advisory Added CWE NIST CWE-667 Added CWE NIST CWE-416 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (including) 5.9.13 -
CVE Modified by [email protected]
Dec. 11, 2020
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2020/12/10/1 [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-29661 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-2020-29661
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.05 }} 0.00%
score
0.12766
percentile