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
EPSS: 0.006 (46.4th percentile) — read the EPSS interpretation.
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.
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
- Redhat Enterprise_linux — versions 8.0, 9.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
- secalert@redhat.com (x_refsource_REDHAT, Third Party Advisory, vdb-entry)
- secalert@redhat.com (x_refsource_REDHAT, 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.