Integer overflow in The X11 Project Libx11
CVE-2020-14344
An integer overflow leading to a heap-buffer overflow was found in The X Input Method (XIM) client was implemented in libX11 before version 1.6.10. As per upstream this is security relevant when setuid programs call XIM client functions while running with elevated privileges. No such programs are shipped with Red Hat Enterprise Linux.
Vulnerability class: Integer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.005 (40.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 40.3% 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
- The X11 Project Libx11 — versions 1.6.10
- X.org Libx11
- Canonical Ubuntu Linux — versions 12.04, 14.04, 16.04
- Fedoraproject Fedora — versions 31, 32, 33
- openSUSE Leap — versions 15.1, 15.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lists.x.org/archives/xorg-announce/2020-July/003050.html (Patch, Mailing List, Vendor Advisory)
- www.openwall.com/lists/oss-security/2020/07/31/1 (Patch, Mailing List, Third Party Advisory)
- bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
- lists.opensuse.org/opensuse-security-announce/2020-08/msg00014.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-08/msg00015.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-08/msg00024.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-08/msg00031.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- security.gentoo.org/glsa/202008-18 (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/4487-1/ (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-14344?
- CVE-2020-14344 is a medium-severity vulnerability in The X11 Project Libx11, classified under Integer Overflow or Wraparound. CVSS score: 6.7/10. Published 2020-08-05.
- How severe is CVE-2020-14344?
- Medium severity. CVSS v3 base score is 6.7 out of 10.
- Is CVE-2020-14344 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.