Detections
Analytics

Azure Linux 3.0 Security Update: glibc (CVE-2023-4527)

medium Nessus Plugin ID 295470

Language:

Synopsis

The remote Azure Linux host is missing one or more security updates.

Description

The version of glibc installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2023-4527 advisory.

 - 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. (CVE-2023-4527)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://nvd.nist.gov/vuln/detail/CVE-2023-4527

Plugin Details

Severity: Medium

ID: 295470

File Name: azure_linux_CVE-2023-4527.nasl

Version: 1.1

Type: local

Published: 1/22/2026

Updated: 1/22/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.0

CVSS v2

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 4.8

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

CVSS Score Source: CVE-2023-4527

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.9

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:microsoft:azure_linux:glibc-nscd, p-cpe:/a:microsoft:azure_linux:glibc-tools, p-cpe:/a:microsoft:azure_linux:glibc, p-cpe:/a:microsoft:azure_linux:glibc-locales-all, p-cpe:/a:microsoft:azure_linux:glibc-lang, p-cpe:/a:microsoft:azure_linux:glibc-devel, x-cpe:/o:microsoft:azure_linux, p-cpe:/a:microsoft:azure_linux:glibc-i18n, p-cpe:/a:microsoft:azure_linux:glibc-static, p-cpe:/a:microsoft:azure_linux:glibc-iconv, p-cpe:/a:microsoft:azure_linux:glibc-debuginfo

Required KB Items: Host/local_checks_enabled, Host/AzureLinux/release, Host/AzureLinux/rpm-list, Host/cpu

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/8/2025

Vulnerability Publication Date: 6/13/2023

Reference Information

CVE: CVE-2023-4527