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Status published
High
CVE-2021-31566
An improper link resolution flaw can occur while extracting an...
Vulnerability Description
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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- https://github.com/libarchive/libarchive/issues/1566
- https://github.com/libarchive/libarchive/commit/b41daecb5ccb4c8e3b2c53fd6147109fc12c3043
- https://bugzilla.redhat.com/show_bug.cgi?id=2024237
- https://access.redhat.com/security/cve/CVE-2021-31566
- https://lists.debian.org/debian-lts-announce/2022/11/msg00030.html
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Affected Vendor
Affected Software
libarchive
Vulnerable Versions:
Fixed in libarchive 3.5.2
Timeline
Official Publish:
August 23rd, 2022
Last Modified:
August 3rd, 2024
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H