Buffer overflow in X.org Libx11
CVE-2023-43785
A vulnerability was found in libX11 due to a boundary condition within the _XkbReadKeySyms() function. This flaw allows a local user to trigger an out-of-bounds read error and read the contents of memory on the system.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.007 (51.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 51.9% 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: 0.007 · change: +0.000
Affected products
- X.org Libx11
- Fedoraproject Fedora — versions 38
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8 — versions 0:1.6.8-8.el8
- Red Hat Enterprise Linux 9 — versions 0:1.7.0-9.el9
- Red Hat Enterprise Linux — versions 8.0, 9.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- access.redhat.com/errata/RHSA-2024:2145 (vendor-advisory)
- access.redhat.com/errata/RHSA-2024:2973 (vendor-advisory)
- access.redhat.com/security/cve/CVE-2023-43785 (Third Party Advisory, vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Third Party Advisory, Issue Tracking)
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2023-43785?
- CVE-2023-43785 is a medium-severity vulnerability in X.org Libx11, classified under Out-of-bounds Write. CVSS score: 6.5/10. Published 2023-10-10.
- How severe is CVE-2023-43785?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2023-43785 known to be exploited?
- 9 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.