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Azure Linux 3.0 Security Update: libvirt (CVE-2024-2494)

medium Nessus Plugin ID 241934

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Synopsis

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

Description

The version of libvirt 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-2024-2494 advisory.

 - A flaw was found in the RPC library APIs of libvirt. The RPC server deserialization code allocates memory for arrays before the non-negative length check is performed by the C API entry points. Passing a negative length to the g_new0 function results in a crash due to the negative length being treated as a huge positive number. This flaw allows a local, unprivileged user to perform a denial of service attack by causing the libvirt daemon to crash. (CVE-2024-2494)

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-2024-2494

Plugin Details

Severity: Medium

ID: 241934

File Name: azure_linux_CVE-2024-2494.nasl

Version: 1.1

Type: local

Published: 7/11/2025

Updated: 7/11/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4.9

Temporal Score: 3.6

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

CVSS Score Source: CVE-2024-2494

CVSS v3

Risk Factor: Medium

Base Score: 6.2

Temporal Score: 5.4

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

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

Vulnerability Information

CPE: p-cpe:/a:microsoft:azure_linux:libvirt-daemon-plugin-sanlock, p-cpe:/a:microsoft:azure_linux:libvirt-daemon-driver-storage-disk, p-cpe:/a:microsoft:azure_linux:libvirt-daemon-driver-vbox, p-cpe:/a:microsoft:azure_linux:libvirt-admin, x-cpe:/o:microsoft:azure_linux, p-cpe:/a:microsoft:azure_linux:libvirt-client, p-cpe:/a:microsoft:azure_linux:libvirt-daemon-vbox, p-cpe:/a:microsoft:azure_linux:libvirt-daemon-driver-storage-gluster, p-cpe:/a:microsoft:azure_linux:libvirt-daemon-driver-network, p-cpe:/a:microsoft:azure_linux:libvirt-lock-sanlock, p-cpe:/a:microsoft:azure_linux:libvirt-daemon-driver-storage-scsi, p-cpe:/a:microsoft:azure_linux:libvirt-daemon-driver-qemu, p-cpe:/a:microsoft:azure_linux:libvirt-daemon-driver-storage-rbd, p-cpe:/a:microsoft:azure_linux:libvirt-daemon-kvm, p-cpe:/a:microsoft:azure_linux:libvirt-nss, p-cpe:/a:microsoft:azure_linux:libvirt-daemon-qemu, p-cpe:/a:microsoft:azure_linux:libvirt-daemon-driver-storage-core, p-cpe:/a:microsoft:azure_linux:libvirt-daemon-config-nwfilter, p-cpe:/a:microsoft:azure_linux:libvirt-daemon-driver-nwfilter, p-cpe:/a:microsoft:azure_linux:libvirt-daemon-plugin-lockd, p-cpe:/a:microsoft:azure_linux:libvirt-daemon-log, p-cpe:/a:microsoft:azure_linux:libvirt-daemon-driver-nodedev, p-cpe:/a:microsoft:azure_linux:libvirt-daemon, p-cpe:/a:microsoft:azure_linux:libvirt-daemon-proxy, p-cpe:/a:microsoft:azure_linux:libvirt-debuginfo, p-cpe:/a:microsoft:azure_linux:libvirt-devel, p-cpe:/a:microsoft:azure_linux:libvirt-daemon-driver-interface, p-cpe:/a:microsoft:azure_linux:libvirt-daemon-driver-storage-mpath, p-cpe:/a:microsoft:azure_linux:libvirt, p-cpe:/a:microsoft:azure_linux:libvirt-daemon-common, p-cpe:/a:microsoft:azure_linux:libvirt-libs, p-cpe:/a:microsoft:azure_linux:libvirt-daemon-driver-secret, p-cpe:/a:microsoft:azure_linux:libvirt-daemon-driver-storage-logical, p-cpe:/a:microsoft:azure_linux:libvirt-daemon-config-network, p-cpe:/a:microsoft:azure_linux:libvirt-docs, p-cpe:/a:microsoft:azure_linux:libvirt-daemon-lock, p-cpe:/a:microsoft:azure_linux:libvirt-client-qemu, p-cpe:/a:microsoft:azure_linux:libvirt-daemon-driver-storage-iscsi, p-cpe:/a:microsoft:azure_linux:libvirt-daemon-driver-storage

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

Exploit Ease: No known exploits are available

Patch Publication Date: 7/8/2025

Vulnerability Publication Date: 3/21/2024

Reference Information

CVE: CVE-2024-2494