CVE-2023-43787
Libx11: integer overflow in xcreateimage() leading to a heap overflow
- Published
- Updated
- Reserved
- Assigned by
- redhat
Description
A vulnerability was found in libX11 due to an integer overflow within the XCreateImage() function. This flaw allows a local user to trigger an integer overflow and execute arbitrary code with elevated privileges.
Timeline
ID reserved
By redhat
- 18 days later
· 18 days later
Published
- 3 years later
· 3 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| redhatCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.47% · top 59% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Weakness
Affected products
libX11
- affected < 1.8.7
Red Hat · Red Hat Enterprise Linux 8
- unaffected 0:1.6.8-8.el8 – < *
Red Hat · Red Hat Enterprise Linux 9
- unaffected 0:1.7.0-9.el9 – < *
Red Hat · Red Hat Enterprise Linux 6
All versions: unknown
Red Hat · Red Hat Enterprise Linux 7
All versions: unknown
References (8)
- RHSA-2024:2145 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2024:2973 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- https://access.redhat.com/security/cve/CVE-2023-43787 (opens in a new tab)vdb-entryx_refsource_REDHATx_transferred
- RHBZ#2242254 (opens in a new tab)issue-trackingx_refsource_REDHATx_transferred
- http://www.openwall.com/lists/oss-security/2024/01/24/9 (opens in a new tab)x_transferred
- https://jfrog.com/blog/xorg-libx11-vulns-cve-2023-43786-cve-2023-43787-part-two/ (opens in a new tab)x_transferred
- https://security.netapp.com/advisory/ntap-20231103-0006/ (opens in a new tab)x_transferred
- https://lists.debian.org/debian-lts-announce/2023/10/msg00005.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2023-43787)Record last updated .