Executive Summary

Informations
Name CVE-2021-43057 First vendor Publication 2021-10-28
Vendor Cve Last vendor Modification 2021-11-29

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

An issue was discovered in the Linux kernel before 5.14.8. A use-after-free in selinux_ptrace_traceme (aka the SELinux handler for PTRACE_TRACEME) could be used by local attackers to cause memory corruption and escalate privileges, aka CID-a3727a8bac0a. This occurs because of an attempt to access the subjective credentials of another task.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43057

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-416 Use After Free

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 7
Os 3414

Sources (Detail)

Source Url
CONFIRM https://security.netapp.com/advisory/ntap-20211125-0001/
MISC https://bugs.chromium.org/p/project-zero/issues/detail?id=2229
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.8
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id...

Alert History

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Date Informations
2022-03-11 01:59:10
  • Multiple Updates
2022-02-01 01:52:58
  • Multiple Updates
2021-12-11 12:53:39
  • Multiple Updates
2021-12-11 01:50:31
  • Multiple Updates
2021-11-29 21:23:05
  • Multiple Updates
2021-11-25 12:49:43
  • Multiple Updates
2021-11-03 17:22:55
  • Multiple Updates
2021-10-29 01:51:14
  • Multiple Updates
2021-10-28 17:22:51
  • Multiple Updates
2021-10-28 09:22:52
  • First insertion