CVE-2023-22809 Information

Description

In Sudo before 1.9.12p2 the sudoedit (aka -e) feature mishandles extra arguments passed in the user-provided environment variables (SUDO_EDITOR VISUAL and EDITOR) allowing a local attacker to append arbitrary entries to the list of files to process. This can lead to privilege escalation. Affected versions are 1.8.0 through 1.9.12.p1. The problem exists because a user-specified editor may contain a --\ argument that defeats a protection mechanism e.g. an EDITOR=‘vim – /path/to/extra/file’ value.

Reference

https://www.synacktiv.com/sites/default/files/2023-01/sudo-CVE-2023-22809.pdf https://www.sudo.ws/security/advisories/sudoedit_any/ https://lists.debian.org/debian-lts-announce/2023/01/msg00012.html https://www.debian.org/security/2023/dsa-5321