CVE-2023-4813 — Use After Free in Glibc

CWE-416 — Use After Free10 documents8 sources
Severity
5.9MEDIUMNVD
EPSS
0.3%
top 46.29%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
10
GNU GlibcFedoraproject FedoraRedhat Enterprise Linux+7 more
Timeline
PublishedSep 12
Latest updateJan 10

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.

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 2.2 | Impact: 3.6

Affected Packages3 packages

▶NVDgnu/glibc< 2.36
▶Debiangnu/glibc< 2.36-3+2
▶Ubuntugnu/glibc< 2.31-0ubuntu9.14+3

Also affects: Fedora 38, Enterprise Linux 8.0, 9.0, 8.8, 9.2

Patches

Patch: bugzilla.redhat.com ↗Patch: bugzilla.redhat.com ↗

🔴Vulnerability Details

5
OSV
glibc regression↗2024-01-10
▶
OSV
glibc vulnerabilities↗2023-12-07
▶
GHSA
GHSA-qx6j-g797-jg9r: A flaw was found in glibc↗2023-09-13
▶
CVEList
Glibc: potential use-after-free in gaih_inet()↗2023-09-12
▶
OSV
CVE-2023-4813: A flaw has been identified in glibc↗2023-09-12
▶

📋Vendor Advisories

4
Ubuntu
GNU C Library vulnerabilities↗2023-12-07
▶
Microsoft
Glibc: potential use-after-free in gaih_inet()↗2023-09-12
▶
Debian
CVE-2023-4813: glibc - A flaw has been identified in glibc. In an uncommon situation, the gaih_inet fun...↗2023
▶
Red Hat
glibc: potential use-after-free in gaih_inet()↗2022-03-01
▶
CVE-2023-4813 — Use After Free in GNU Glibc | cvebase