CVE-2023-4527

Severity CVSS v4.0:

Pending analysis

Type:

CWE-121 Stack-based Buffer Overflow

Publication date:

18/09/2023

Last modified:

24/06/2025

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.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 6.50 MEDIUM
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): Low
Integrity (I): None
Availability (A): High

Base Score 3.x

6.50

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:gnu:glibc::::::::	2.36 (including)	2.36.113 (excluding)
cpe:2.3:a:gnu:glibc::::::::	2.37 (including)	2.37.38 (excluding)
cpe:2.3:a:gnu:glibc::::::::	2.38 (including)	2.38.19 (excluding)
cpe:2.3:a:redhat:codeready_linux_builder_eus:9.2:::::::*
cpe:2.3:a:redhat:codeready_linux_builder_eus_for_power_little_endian:9.0_ppc64le:::::::*
cpe:2.3:a:redhat:codeready_linux_builder_eus_for_power_little_endian_eus:9.2_ppc64le:::::::*
cpe:2.3:a:redhat:codeready_linux_builder_for_arm64:9.0_aarch64:::::::*
cpe:2.3:a:redhat:codeready_linux_builder_for_arm64_eus:9.2_aarch64:::::::*
cpe:2.3:a:redhat:codeready_linux_builder_for_ibm_z_systems:9.0_s390x:::::::*
cpe:2.3:a:redhat:codeready_linux_builder_for_ibm_z_systems_eus:9.2_s390x:::::::*
cpe:2.3:o:redhat:enterprise_linux:8.0:::::::*
cpe:2.3:o:redhat:enterprise_linux:9.0:::::::*
cpe:2.3:o:redhat:enterprise_linux_eus:8.8:::::::*
cpe:2.3:o:redhat:enterprise_linux_eus:9.2:::::::*
cpe:2.3:o:redhat:enterprise_linux_for_arm_64:9.0_aarch64:::::::*

To consult the complete list of CPE names with products and versions, see this page

CPE	From	Up to
cpe:2.3:a:gnu:glibc::::::::	2.36 (including)	2.36.113 (excluding)
cpe:2.3:a:gnu:glibc::::::::	2.37 (including)	2.37.38 (excluding)
cpe:2.3:a:gnu:glibc::::::::	2.38 (including)	2.38.19 (excluding)
cpe:2.3:a:redhat:codeready_linux_builder_eus:9.2:::::::*
cpe:2.3:a:redhat:codeready_linux_builder_eus_for_power_little_endian:9.0_ppc64le:::::::*
cpe:2.3:a:redhat:codeready_linux_builder_eus_for_power_little_endian_eus:9.2_ppc64le:::::::*
cpe:2.3:a:redhat:codeready_linux_builder_for_arm64:9.0_aarch64:::::::*
cpe:2.3:a:redhat:codeready_linux_builder_for_arm64_eus:9.2_aarch64:::::::*
cpe:2.3:a:redhat:codeready_linux_builder_for_ibm_z_systems:9.0_s390x:::::::*
cpe:2.3:a:redhat:codeready_linux_builder_for_ibm_z_systems_eus:9.2_s390x:::::::*
cpe:2.3:o:redhat:enterprise_linux:8.0:::::::*
cpe:2.3:o:redhat:enterprise_linux:9.0:::::::*
cpe:2.3:o:redhat:enterprise_linux_eus:8.8:::::::*
cpe:2.3:o:redhat:enterprise_linux_eus:9.2:::::::*
cpe:2.3:o:redhat:enterprise_linux_for_arm_64:9.0_aarch64:::::::*

CVE-2023-4527

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools