Cyber Resilience

CVE-2023-4527

MediumPublic PoCUpdated

Published: 18 September 2023

Published
18 September 2023
Modified
12 May 2026
KEV Added
—
Patch
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CVSS Score v3.1 6.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H
EPSS Score 0.0011 29.3th percentile
Risk Priority 13 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2023-4527 is a medium-severity Stack-based Buffer Overflow (CWE-121) vulnerability in Gnu Glibc. Its CVSS base score is 6.5 (Medium).

Operationally, ranked at the 29.3th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

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…

more

contents through the function returned address data, and may cause a crash.

CWE(s)
CWE-121CWE-125

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

gnu
glibc
2.36 — 2.36.113 · 2.37 — 2.37.38 · 2.38 — 2.38.19
redhat
codeready linux builder eus
9.2
redhat
codeready linux builder eus for power little endian
9.0_ppc64le
redhat
codeready linux builder eus for power little endian eus
9.2_ppc64le
redhat
codeready linux builder for arm64
9.0_aarch64
redhat
codeready linux builder for arm64 eus
9.2_aarch64
redhat
codeready linux builder for ibm z systems
9.0_s390x
redhat
codeready linux builder for ibm z systems eus
9.2_s390x
redhat
enterprise linux
8.0, 9.0
redhat
enterprise linux eus
8.8, 9.2
+17 more product configuration(s) — see NVD for full list

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References