Home/CVE/A vulnerability was found in libX11 due to an infinite loop within the PutSubImage() function. This flaw allows a local
CVE

CVE-2023-43786

A vulnerability was found in libX11 due to an infinite loop within the PutSubImage() function. This flaw allows a local

A vulnerability was found in libX11 due to an infinite loop within the PutSubImage() function. This flaw allows a local user to consume all available system resources and cause a denial of service condition.

MEDIUM · CVSS 5.5 EPSS 0.00084
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-400Uncontrolled Resource Consumption
CWE-835Loop with Unreachable Exit Condition ('Infinite Loop')
▤

Affected Products & Versions

3
x.org libx11< 1.8.7
redhat enterprise linuxall versions
fedoraproject fedoraall versions
▣

Scoring & Timeline

5.5
MEDIUM · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD10 Oct 2023 · 01:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

11
suse-csafSUSE-SU-2024:2453-1
suse-csafopenSUSE-SU-2024:13296-1
usnUSN-6408-2
msrcCVE-2023-43786
usnUSN-6407-2
🔗

References & Sources

6
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://access.redhat.com/security/cve/CVE-2023-43786Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2242253Issue TrackingThird Party Advisory
http://www.openwall.com/lists/oss-security/2024/01/24/9
https://lists.debian.org/debian-lts-announce/2023/10/msg00005.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/63IBRFLQVZSMOAZBZOBKFWJP26ILRAGQ/
https://security.netapp.com/advisory/ntap-20231103-0006/
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