CVE-2023-4813
MEDIUM severity · CVSS 5.9 · Use-after-free
5.9CVSS MEDIUM
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityHigh
Privileges requiredNone
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)2%
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products we track (2)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Official patch: https://bugzilla.redhat.com/show_bug.cgi?id=2237798 ↗
Additional information
- NVD record
- https://bugzilla.redhat.com/show_bug.cgi?id=2237798Patch
- https://access.redhat.com/errata/RHBA-2024:2413
- https://access.redhat.com/errata/RHSA-2023:5453Advisory
- https://access.redhat.com/errata/RHSA-2023:5455Advisory
- https://access.redhat.com/errata/RHSA-2023:7409Advisory
- https://access.redhat.com/security/cve/CVE-2023-4813Advisory
- http://www.openwall.com/lists/oss-security/2023/10/03/8