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CVE-2023-4527

Glibc: stack read overflow in getaddrinfo in no-aaaa mode

Published: Sep 18, 2023Updated: May 12, 2026 Sources: CVE List NVD BDU csafCWE-121
6.5MEDIUM
NVD MITRE
EPSS Score
1.5%
Top 28.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:LI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-121CWE-125

Affected Products

Red Hat Inc.
commercial·USaka Red Hat, redhat
Red Hat Enterprise Linux 8On-premOS
Operating Systems / linux-distro
codeready linux builder eusOn-prem
Operating Systems / linux-distro
codeready linux builder eus for power little endianOn-prem
Operating Systems / linux-distro
codeready linux builder eus for power little endian eusOn-prem
Operating Systems / linux-distro
codeready linux builder for arm64On-prem
Operating Systems / linux-distro
codeready linux builder for arm64 eusOn-prem
Operating Systems / linux-distro
codeready linux builder for ibm z systemsOn-prem
Operating Systems / linux-distro
codeready linux builder for ibm z systems eusOn-prem
Operating Systems / linux-distro
netapp
commercial·US
h300s firmware
Hardware Firmware
h500s firmware
Hardware Firmware
h700s firmware
Hardware Firmware
h410s firmware
Hardware Firmware
h410c firmware
Hardware Firmware
gnu
oss-project·USaka g. nu
glibc
OSS Libraries
fedoraproject
oss-project·USaka fedora project
fedoraOn-premOS
Operating Systems / linux-distro
Сообщество свободного программного обеспечения
oss-projectaka fsf
Debian GNU/LinuxOn-premOS
Operating Systems / linux-distro
ООО «РусБИТех-Астра»
commercial·RUaka rusbitech-astra
Astra Linux Special Edition для «Эльбрус»On-premOS
Operating Systems / linux-distro
and 21 more affected products View all →

Exploitability

Official Patch Available
Workaround Available
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Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

2 techniques
Collection
Privilege Escalation
View detailed technique mapping

References

https://access.redhat.com/errata/RHSA-2023:5453
access.redhat.com
https://access.redhat.com/errata/RHSA-2023:5455
access.redhat.com
https://access.redhat.com/security/cve/CVE-2023-4527
access.redhat.com
and 267 more references View all →

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