CVE-2023-4527

medium

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

https://security.netapp.com/advisory/ntap-20231116-0012/

https://security.gentoo.org/glsa/202310-03

https://lists.fedoraproject.org/archives/list/[email protected]/message/NDAQWHTSVOCOZ5K6KPIWKRT3JX4RTZUR/

https://lists.fedoraproject.org/archives/list/[email protected]/message/DFG4P76UHHZEWQ26FWBXG76N2QLKKPZA/

https://lists.fedoraproject.org/archives/list/[email protected]/message/4DBUQRRPB47TC3NJOUIBVWUGFHBJAFDL/

https://access.redhat.com/security/cve/CVE-2023-4527

https://access.redhat.com/errata/RHSA-2023:5455

https://access.redhat.com/errata/RHSA-2023:5453

http://www.openwall.com/lists/oss-security/2023/09/25/1

https://www.cisa.gov/news-events/ics-advisories/icsa-25-162-05

https://cert-portal.siemens.com/productcert/html/ssa-831302.html

https://cert-portal.siemens.com/productcert/html/ssa-082556.html

https://bugzilla.redhat.com/show_bug.cgi?id=2234712

Details

Source: Mitre, NVD

Published: 2023-09-18

Updated: 2026-05-12

Risk Information

CVSS v2

Base Score: 6.1

Vector: CVSS2#AV:N/AC:H/Au:N/C:P/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 6.5

Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H

Severity: Medium

EPSS

EPSS: 0.01473