CVE-2021-31566 Information

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.

Reference

https://github.com/libarchive/libarchive/commit/b41daecb5ccb4c8e3b2c53fd6147109fc12c3043 https://access.redhat.com/security/cve/CVE-2021-31566 https://bugzilla.redhat.com/show_bug.cgi?id=2024237 https://github.com/libarchive/libarchive/issues/1566