CVE-2021-23177 Information

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.

Reference

https://bugzilla.redhat.com/show_bug.cgi?id=2024245 https://github.com/libarchive/libarchive/issues/1565 https://access.redhat.com/security/cve/CVE-2021-23177 https://github.com/libarchive/libarchive/commit/fba4f123cc456d2b2538f811bb831483bf336bad