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Status published
High
CVE-2021-23177
An improper link resolution flaw while extracting an archive can...
Vulnerability Description
An improper link resolution flaw while extracting an archive can lead to changing the access control list (ACL) of the target of the link. 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 change the ACL of a file on the system and gain more privileges.
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/1565
- https://github.com/libarchive/libarchive/commit/fba4f123cc456d2b2538f811bb831483bf336bad
- https://bugzilla.redhat.com/show_bug.cgi?id=2024245
- https://access.redhat.com/security/cve/CVE-2021-23177
- 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