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CVE

CVE-2023-4813

A flaw has been identified in glibc. In an uncommon situation, the gaih_inet function may use memory that has been freed

A flaw has been identified in glibc. In an uncommon situation, the gaih_inet function may use memory that has been freed, resulting in an application crash. This issue is only exploitable when the getaddrinfo function is called and the hosts database in /etc/nsswitch.conf is configured with SUCCESS=continue or SUCCESS=merge.

MEDIUM · CVSS 5.9 EPSS 0.00304
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-416Use After Free
CWE-416Use After Free
▤

Affected Products & Versions

16
gnu glibc< 2.36
redhat enterprise linuxall versions
redhat enterprise linux eusall versions
redhat enterprise linux for ibm z systems eus s390xall versions
redhat enterprise linux for ibm z systems s390xall versions
redhat enterprise linux for power little endianall versions
redhat enterprise linux for power little endian eusall versions
redhat enterprise linux server ausall versions
▣

Scoring & Timeline

5.9
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 NVD12 Sep 2023 · 10:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
⚑

Vendor Advisories

12
msrcCVE-2023-4813
suse-csafopenSUSE-SU-2024:13388-1
siemens-csafSSA-398330
usnUSN-6541-1
suse-csafSUSE-SU-2023:4110-1
🔗

References & Sources

4
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-2023-4813Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2237798Issue TrackingPatchThird Party Advisory
http://www.openwall.com/lists/oss-security/2023/10/03/8
https://security.netapp.com/advisory/ntap-20231110-0003/
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