CVE-2023-43786: fedoraproject fedora Uncontrolled Resource Consumption
CVSS: 5.5v3.1MediumModified
AliasesALPINE-CVE-2023-43786UBUNTU-CVE-2023-43786DEBIAN-CVE-2023-43786
Published 10-10-2023Last modified 06-11-2025
Vulnerability summary
CVE-2023-43786 is a medium (CVSS 5.5) Uncontrolled Resource Consumption vulnerability in fedoraproject fedora. EPSS estimates a 0.47% chance of exploitation in the next 30 days, higher than 39.7% of scored vulnerabilities.
CVSS score
5.5/10
010
Medium · v3.1 (CVE.org)EPSS score
0.47%
0%100%
Low · +0.01 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 12 · Related 7Timeline
- 10-10-2023PublishedVulnerability first disclosed.
- 06-11-2025Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
5 scores · 5 sources · 1 versionMedium 5.5Preferred score · CVE.org (CNA)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HSourcesAll 5 agree
- OSV · AlpineEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- NVDNIST5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.47%
Chance of exploitation in the next 30 days
Percentile
40%
Versus all other CVEs
30-day change
+0.01 pp
From 0.46% on 19-09-2026
19-09-202619-10-2026
EPSS score0.47%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-400Uncontrolled Resource ConsumptionThe product does not properly control the allocation and maintenance of a limited resource.
- CWE-835Loop with Unreachable Exit Condition ('Infinite Loop')The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.
Affected systems
Ubuntu3 products
- libx11< 2:1.6.2-1ubuntu2.1+esm5 | < 2:1.6.3-1ubuntu2.2+esm4 | < 2:1.6.4-3ubuntu0.4+esm2 | < 2:1.6.9-2ubuntu1.6 | < 2:1.7.5-1ubuntu0.3 | < 2:1.8.6-1ubuntu1
- libxpm< 1:3.5.10-1ubuntu0.1+esm2 | < 1:3.5.11-1ubuntu0.16.04.1+esm2 | < 1:3.5.12-1ubuntu0.18.04.2+esm1 | < 1:3.5.12-1ubuntu0.20.04.2 | < 1:3.5.12-1ubuntu0.22.04.2 | < 1:3.5.12-1.1ubuntu1
- motifAll versions (No fix recorded)
Alpine1 product
- libx11< 1.8.7-r0
Debian1 product
- libx11< 2:1.8.4-2+deb12u2 | < 2:1.8.7-1
Fedoraproject1 product
- fedoraEOL38
Redhat1 product
- enterprise_linux8.0 | 9.0
X.org1 product
- libx11< 1.8.7
6 vendors · 8 products
References
17 links- www.openwall.com/lists/oss-security/2024/01/24/9X Transferred
- lists.fedoraproject.org/archives/…X Transferred
- security.netapp.com/advisory/ntap-20231103-0006/X Transferred
