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CVE

CVE-2023-4527

A flaw was found in glibc. When the getaddrinfo function is called with the AF_UNSPEC address family and the system is c

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.

MEDIUM · CVSS 6.5 EPSS 0.00112
Schedule remediation
  • Public exploit or PoC is available
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-121Stack-based Buffer Overflow
CWE-125Out-of-bounds Read
▤

Affected Products & Versions

29
gnu glibc>= 2.36 and < 2.36.113
gnu glibc>= 2.37 and < 2.37.38
gnu glibc>= 2.38 and < 2.38.19
redhat codeready linux builder eusall versions
redhat codeready linux builder eus for power little endianall versions
redhat codeready linux builder eus for power little endian eusall versions
redhat codeready linux builder for arm64all versions
redhat codeready linux builder for arm64 eusall versions
⚠

Public Exploits & PoCs

1
pocbugzilla.redhat.com · show_bug.cgi?id=2234712bugzilla.redhat.com
▣

Scoring & Timeline

6.5
MEDIUM · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD18 Sep 2023 · 05:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

11
msrcCVE-2023-4527
siemens-csafSSA-082556
suse-csafopenSUSE-SU-2024:13273-1
siemens-csafSSA-398330
usnUSN-6409-1
🔗

References & Sources

9
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://access.redhat.com/security/cve/CVE-2023-4527Third Party Advisory
http://www.openwall.com/lists/oss-security/2023/09/25/1Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4DBUQRRPB47TC3NJOUIBVWUGFHBJAFDL/Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DFG4P76UHHZEWQ26FWBXG76N2QLKKPZA/Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NDAQWHTSVOCOZ5K6KPIWKRT3JX4RTZUR/Mailing ListThird Party Advisory
https://security.gentoo.org/glsa/202310-03Third Party Advisory
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