CVE-2023-4813
MEDIUMCVSS 5.9/10EPSS 1.67%
Last modified
CVE-2023-4813 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. 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. EPSS estimates a 1.67% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Gnu | Glibc | < 2.36 |
| Redhat | Enterprise Linux | 8.0 |
| Redhat | Enterprise Linux | 9.0 |
| Redhat | Enterprise Linux Eus | 8.8 |
| Redhat | Enterprise Linux Eus | 9.2 |
| Redhat | Enterprise Linux For Ibm Z Systems Eus S390x | 9.2 |
| Redhat | Enterprise Linux For Ibm Z Systems S390x | 9.2 |
| Redhat | Enterprise Linux For Power Little Endian | 9.2_ppc64le |
| Redhat | Enterprise Linux For Power Little Endian Eus | 9.2_ppc64le |
| Redhat | Enterprise Linux Server Aus | 9.2 |
| Redhat | Enterprise Linux Server Tus | 8.8 |
| Fedoraproject | Fedora | 38 |
| Netapp | Active Iq Unified Manager | All versions |
| Netapp | H300s Firmware | All versions |
| Netapp | H500s Firmware | All versions |
| Netapp | H700s Firmware | All versions |
| Netapp | H410s Firmware | All versions |
| Netapp | H410c Firmware | All versions |
References
- https://access.redhat.com/errata/RHSA-2023:5453Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:5455Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:7409Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2023-4813Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2237798Issue Tracking, Patch, Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:5453Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:5455Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:7409Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2023-4813Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2237798Issue Tracking, Patch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is 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.
How severe is CVE-2023-4813?
CVE-2023-4813 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 1.67% probability of exploitation in the next 30 days.
How do I fix CVE-2023-4813?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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