CVE-2021-31566
Publication date 24 December 2021
Last updated 24 July 2024
Ubuntu priority
Cvss 3 Severity Score
An improper link resolution flaw can occur while extracting an archive leading to changing modes, times, access control lists, and flags of a file outside of the archive. An attacker may provide a malicious archive to a victim user, who would trigger this flaw when trying to extract the archive. A local attacker may use this flaw to gain more privileges in a system.
Status
Package | Ubuntu Release | Status |
---|---|---|
libarchive | 24.04 LTS noble |
Not affected
|
22.04 LTS jammy |
Not affected
|
|
20.04 LTS focal |
Fixed 3.4.0-2ubuntu1.1
|
|
18.04 LTS bionic |
Vulnerable
|
|
16.04 LTS xenial |
Needs evaluation
|
|
14.04 LTS trusty |
Needs evaluation
|
Notes
Patch details
Package | Patch details |
---|---|
libarchive |
Severity score breakdown
Parameter | Value |
---|---|
Base score | 7.8 · High |
Attack vector | Local |
Attack complexity | Low |
Privileges required | None |
User interaction | Required |
Scope | Unchanged |
Confidentiality | High |
Integrity impact | High |
Availability impact | High |
Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
References
Related Ubuntu Security Notices (USN)
- USN-5291-1
- libarchive vulnerabilities
- 17 February 2022