Use-after-free in dbus - CVE-2022-42012

Vulnerability identifier: #VU67971

CSH Severity: Low

CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

CVE-ID: CVE-2022-42012

CWE-ID: CWE-416

Exploitation vector: Local access

Exploit availability: No public exploit available

Vendor: Freedesktop.org

Affected software:
dbus

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error caused by a message in non-native endianness with out-of-band Unix file descriptors. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.

Install updates from vendor's website.

• https://seclists.org/oss-sec/2022/q4/7
• https://gitlab.freedesktop.org/dbus/dbus/-/commit/236f16e444e88a984cf12b09225e0f8efa6c5b44