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Ubuntu 20.04 LTS / 22.04 LTS / 23.10 : libvirt vulnerabilities (USN-6734-1)

medium Nessus Plugin ID 193342

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Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 20.04 LTS / 22.04 LTS / 23.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6734-1 advisory.

 - An off-by-one error flaw was found in the udevListInterfacesByStatus() function in libvirt when the number of interfaces exceeds the size of the `names` array. This issue can be reproduced by sending specially crafted data to the libvirt daemon, allowing an unprivileged client to perform a denial of service attack by causing the libvirt daemon to crash. (CVE-2024-1441)

 - 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)

 - A NULL pointer dereference flaw was found in the udevConnectListAllInterfaces() function in libvirt. This issue can occur when detaching a host interface while at the same time collecting the list of interfaces via virConnectListAllInterfaces API. This flaw could be used to perform a denial of service attack by causing the libvirt daemon to crash. (CVE-2024-2496)

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

Solution

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-6734-1

Plugin Details

Severity: Medium

ID: 193342

File Name: ubuntu_USN-6734-1.nasl

Version: 1.0

Type: local

Agent: unix

Published: 4/15/2024

Updated: 4/15/2024

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

CVSS Score Source: CVE-2024-2496

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

CVSS Score Source: CVE-2024-2494

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:20.04:-:lts, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, cpe:/o:canonical:ubuntu_linux:23.10, p-cpe:/a:canonical:ubuntu_linux:libnss-libvirt, p-cpe:/a:canonical:ubuntu_linux:libvirt-clients, p-cpe:/a:canonical:ubuntu_linux:libvirt-clients-qemu, p-cpe:/a:canonical:ubuntu_linux:libvirt-daemon, p-cpe:/a:canonical:ubuntu_linux:libvirt-daemon-config-network, p-cpe:/a:canonical:ubuntu_linux:libvirt-daemon-config-nwfilter, p-cpe:/a:canonical:ubuntu_linux:libvirt-daemon-driver-lxc, p-cpe:/a:canonical:ubuntu_linux:libvirt-daemon-driver-qemu, p-cpe:/a:canonical:ubuntu_linux:libvirt-daemon-driver-storage-gluster, p-cpe:/a:canonical:ubuntu_linux:libvirt-daemon-driver-storage-iscsi-direct, p-cpe:/a:canonical:ubuntu_linux:libvirt-daemon-driver-storage-rbd, p-cpe:/a:canonical:ubuntu_linux:libvirt-daemon-driver-storage-zfs, p-cpe:/a:canonical:ubuntu_linux:libvirt-daemon-driver-vbox, p-cpe:/a:canonical:ubuntu_linux:libvirt-daemon-driver-xen, p-cpe:/a:canonical:ubuntu_linux:libvirt-daemon-system, p-cpe:/a:canonical:ubuntu_linux:libvirt-daemon-system-systemd, p-cpe:/a:canonical:ubuntu_linux:libvirt-daemon-system-sysv, p-cpe:/a:canonical:ubuntu_linux:libvirt-dev, p-cpe:/a:canonical:ubuntu_linux:libvirt-l10n, p-cpe:/a:canonical:ubuntu_linux:libvirt-login-shell, p-cpe:/a:canonical:ubuntu_linux:libvirt-sanlock, p-cpe:/a:canonical:ubuntu_linux:libvirt-wireshark, p-cpe:/a:canonical:ubuntu_linux:libvirt0

Required KB Items: Host/cpu, Host/Debian/dpkg-l, Host/Ubuntu, Host/Ubuntu/release

Exploit Ease: No known exploits are available

Patch Publication Date: 4/15/2024

Vulnerability Publication Date: 3/11/2024

Reference Information

CVE: CVE-2024-1441, CVE-2024-2494, CVE-2024-2496

IAVA: 2024-A-0184

USN: 6734-1