Use After Free in GNOME Display Manager
CVE-2018-14424
The daemon in GDM through 3.29.1 does not properly unexport display objects from its D-Bus interface when they are destroyed, which allows a local attacker to trigger a use-after-free via a specially crafted sequence of D-Bus method calls, resulting in a denial of service or potential code execution.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.005 (42.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 42.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
Weakness classification (CWE)
References
- lists.debian.org/debian-lts-announce/2018/09/msg00003.html (mailing-list, Mailing List)
- gitlab.gnome.org/GNOME/gdm/issues/401 (Third Party Advisory)
- usn.ubuntu.com/3737-1/ (vendor-advisory, Third Party Advisory)
- www.debian.org/security/2018/dsa-4270 (vendor-advisory, Third Party Advisory)
- www.securityfocus.com/bid/105179 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2018-14424?
- CVE-2018-14424 is a high-severity vulnerability in GNOME Display Manager, classified under Use After Free. CVSS score: 7.8/10. Published 2018-08-14.
- How severe is CVE-2018-14424?
- High severity. CVSS v3 base score is 7.8 out of 10.