Use After Free in GNU Glibc
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, 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.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.019 (79.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 79.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.017 · newest: 0.019 · change: +0.003
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- access.redhat.com/errata/RHBA-2024:2413 (vendor-advisory)
- access.redhat.com/errata/RHSA-2023:5453 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2023:5455 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2023:7409 (vendor-advisory, Third Party Advisory)
- access.redhat.com/security/cve/CVE-2023-4813 (Third Party Advisory, vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Patch, Third Party Advisory, Issue Tracking)
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2023-4813?
- CVE-2023-4813 is a medium-severity vulnerability in GNU Glibc, classified under Use After Free. CVSS score: 5.9/10. Published 2023-09-12.
- How severe is CVE-2023-4813?
- Medium severity. CVSS v3 base score is 5.9 out of 10.
- Is CVE-2023-4813 known to be exploited?
- 7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.