This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2021-23240 →

DEBIAN-CVE-2021-23240

selinux_edit_copy_tfiles in sudoedit in Sudo before 1.9.5 allows a local unprivileged user to gain file ownership and escalate privileges by replacing...

Original description

The description as published by the source.

selinux_edit_copy_tfiles in sudoedit in Sudo before 1.9.5 allows a local unprivileged user to gain file ownership and escalate privileges by replacing a temporary file with a symlink to an arbitrary file target. This affects SELinux RBAC support in permissive mode. Machines without SELinux are not vulnerable.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 sudo

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.9.5-1"}]}]

Debian:13 sudo

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.9.5-1"}]}]

Debian:14 sudo

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.9.5-1"}]}]

References

advisory security-tracker.debian.org