CVE-2023-4806 — Use After Free in Glibc
CWE-416 — Use After FreeCWE-401 — Missing Release of Memory after Effective Lifetime12 documents8 sources
Severity
5.9MEDIUMNVD
EPSS
1.9%
top 16.76%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedSep 18
Latest updateJan 10
Description
A flaw has been identified in glibc. In an extremely rare situation, the getaddrinfo function may access memory that has been freed, resulting in an application crash. This issue is only exploitable when a NSS module implements only the _nss_*_gethostbyname2_r and _nss_*_getcanonname_r hooks without implementing the _nss_*_gethostbyname3_r hook. The resolved name should return a large number of IPv6 and IPv4, and the call to the getaddrinfo function should have the AF_INET6 address family with A…
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 Packages5 packages
Also affects: Fedora 37, 38, 39, Enterprise Linux 7.0, 8.0, 9.0, 8.8, 9.2