CVE-2021-31566
HIGH7.8EPSS 0.04%Published: 8/23/2022Modified: 4/28/2026
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.
Affected packages (2)
- Alpine/libarchivefrom 0, < 3.5.3-r0
- Debian/libarchivefrom 0, < 3.4.3-2+deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |