Integer overflow in X.org X Server
CVE-2020-14362
A flaw was found in X.Org Server before xorg-x11-server 1.20.9. An Integer underflow leading to heap-buffer overflow may lead to a privilege escalation vulnerability. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.006 (46.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 46.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- X.org X Server
- Canonical Ubuntu Linux — versions 14.04
- Red Hat Enterprise Linux — versions 6.0, 7.0, 8.0
- Xorg-X11-Server — versions before xorg-x11-server 1.20.9
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lists.x.org/archives/xorg-announce/2020-August/003058.html (Patch, Mailing List, Vendor Advisory)
- bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
- usn.ubuntu.com/4488-2/ (vendor-advisory, Third Party Advisory)
- security.gentoo.org/glsa/202012-01 (vendor-advisory, Third Party Advisory)
- www.zerodayinitiative.com/advisories/ZDI-20-1419/ (VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-14362?
- CVE-2020-14362 is a high-severity vulnerability in X.org X Server, classified under Integer Underflow. CVSS score: 7.8/10. Published 2020-09-15.
- How severe is CVE-2020-14362?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2020-14362 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.