Executive Summary

Informations
Name CVE-2020-29661 First vendor Publication 2020-12-09
Vendor Cve Last vendor Modification 2021-02-12

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Overall CVSS Score 7.8
Base Score 7.8 Environmental Score 7.8
impact SubScore 5.9 Temporal Score 7.8
Exploitabality Sub Score 1.8
 
Attack Vector Local Attack Complexity Low
Privileges Required Low User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact High Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:L/Au:N/C:C/I:C/A:C)
Cvss Base Score 7.2 Attack Range Local
Cvss Impact Score 10 Attack Complexity Low
Cvss Expoit Score 3.9 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-29661

CWE : Common Weakness Enumeration

% Id Name
50 % CWE-667 Insufficient Locking
50 % CWE-416 Use After Free

CPE : Common Platform Enumeration

TypeDescriptionCount
Os 2
Os 3360

Sources (Detail)

Source Url
CONFIRM https://security.netapp.com/advisory/ntap-20210122-0001/
DEBIAN https://www.debian.org/security/2021/dsa-4843
FEDORA https://lists.fedoraproject.org/archives/list/package-announce@lists.fedorapr...
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedorapr...
MISC http://packetstormsecurity.com/files/160681/Linux-TIOCSPGRP-Broken-Locking.html
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id...
MLIST http://www.openwall.com/lists/oss-security/2020/12/10/1
https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html

Alert History

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Date Informations
2021-02-13 05:22:49
  • Multiple Updates
2021-02-02 17:22:52
  • Multiple Updates
2021-01-26 21:23:33
  • Multiple Updates
2021-01-14 01:32:35
  • Multiple Updates
2021-01-13 01:31:25
  • Multiple Updates
2020-12-23 21:23:26
  • Multiple Updates
2020-12-23 00:22:54
  • Multiple Updates
2020-12-17 09:33:51
  • Multiple Updates
2020-12-14 21:23:27
  • Multiple Updates
2020-12-12 09:22:51
  • Multiple Updates
2020-12-11 09:22:53
  • Multiple Updates
2020-12-11 05:22:51
  • Multiple Updates
2020-12-09 21:24:09
  • First insertion