CVE-2023-4527

MEDIUM

glibc >=2.36 <2.36.113 - Stack-based Buffer Overflow via getaddrinfo DNS Response

Title source: llm
STIX 2.1

Description

A flaw was found in glibc. When the getaddrinfo function is called with the AF_UNSPEC address family and the system is configured with no-aaaa mode via /etc/resolv.conf, a DNS response via TCP larger than 2048 bytes can potentially disclose stack contents through the function returned address data, and may cause a crash.

References (12)

Core 12
Core References
Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2023/09/25/1
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2023:5453
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2023:5455
Third Party Advisory vdb-entry x_refsource_redhat
https://access.redhat.com/security/cve/CVE-2023-4527
Exploit, Issue Tracking, Third Party Advisory issue-tracking x_refsource_redhat
https://bugzilla.redhat.com/show_bug.cgi?id=2234712

Scores

CVSS v3 6.5
EPSS 0.0151
EPSS Percentile 71.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-121 CWE-125
Status published
Products (37)
fedoraproject/fedora 37
fedoraproject/fedora 38
fedoraproject/fedora 39
gnu/glibc 2.36 - 2.36.113
netapp/h300s_firmware
netapp/h410c_firmware
netapp/h410s_firmware
netapp/h500s_firmware
netapp/h700s_firmware
Red Hat/Red Hat Enterprise Linux 6
... and 27 more
Published Sep 18, 2023
Tracked Since Feb 18, 2026