An IT security alert update for a known vulnerability has been released for libvirt. You can read about which products are affected by the security gap here on news.de.
The Federal Office for Security in Information Technology (BSI) released an update on April 29, 2024 to a security vulnerability for libvirt that became known on March 14, 2024. The security vulnerability affects the operating systems Linux, UNIX and Windows as well as the products Debian Linux, Amazon Linux 2, Red Hat Enterprise Linux, Ubuntu Linux, SUSE Linux and open source libvirt.
The latest manufacturer recommendations regarding updates, workarounds and security patches for this vulnerability can be found here: Red Hat Security Advisory RHSA-2024:2236 (As of April 30, 2024). Other useful resources are listed later in this article.
Security advisory for libvirt – Risk: medium
Risk level: 3 (medium)
CVSS Base Score: 5,5
CVSS Temporal Score: 4,8
Remote attack: No
The Common Vulnerability Scoring System (CVSS) is used to assess the severity of vulnerabilities in computer systems. The CVSS standard makes it possible to compare potential or actual security vulnerabilities based on various metrics in order to create a priority list for taking countermeasures. The attributes “none”, “low”, “medium”, “high” and “critical” are used to determine the severity levels of a vulnerability. The Base Score evaluates the requirements for an attack (including authentication, complexity, privileges, user interaction) and its consequences. With the temporal score, framework conditions that can change over time are taken into account in the evaluation. According to the CVSS, the risk of the vulnerability discussed here is assessed as “medium” with a base score of 5.5.
libvirt Bug: Vulnerability enables denial of service
Libvirt is a library that provides interfaces to the virtualization functions of Linux and provides tools for managing virtualized systems.
A local attacker could exploit a vulnerability in libvirt to perform a denial of service attack.
The vulnerability is identified with the individual CVE (Common Vulnerabilities and Exposures) serial number. CVE-2024-2496 traded.
Systems affected by the libvirt security vulnerability at a glance
Operating systems
Linux, UNIX, Windows
Products
Debian Linux (cpe:/o:debian:debian_linux)
Amazon Linux 2 (cpe:/o:amazon:linux_2)
Red Hat Enterprise Linux (cpe:/o:redhat:enterprise_linux)
Ubuntu Linux (cpe:/o:canonical:ubuntu_linux)
SUSE Linux (cpe:/o:suse:suse_linux)
Open Source libvirt
General measures for dealing with IT vulnerabilities
Users of the affected applications should keep them up to date. When security gaps become known, manufacturers are required to fix them as quickly as possible by developing a patch or a workaround. If security patches are available, install them promptly. For information, consult the sources listed in the next section. These often contain further information about the latest version of the software in question as well as the availability of security patches or information about workarounds. If you have any further questions or uncertainties, please contact your responsible administrator. IT security managers should regularly check the sources mentioned to see whether a new security update is available.
Sources of updates, patches and workarounds
Here you will find further links with information about bug reports, security fixes and workarounds.
Red Hat Security Advisory RHSA-2024:2236 vom 2024-04-30 (29.04.2024)
For more information, see:
Amazon Linux Security Advisory ALAS-2024-2513 vom 2024-04-18 (17.04.2024)
For more information, see:
Ubuntu Security Notice USN-6734-1 vom 2024-04-15 (15.04.2024)
For more information, see:
SUSE Security Update SUSE-SU-2024:1099-1 vom 2024-04-08 (08.04.2024)
For more information, see:
Debian Security Advisory DLA-3778 vom 2024-04-01 (01.04.2024)
For more information, see:
SUSE Security Update SUSE-SU-2024:1005-1 vom 2024-03-27 (27.03.2024)
For more information, see:
Red Hat bug tracker #2269672 from 2024-03-15 (14.03.2024)
For more information, see:
Version history of this security alert
This is the 7th version of this IT security notice for libvirt. If further updates are announced, this text will be updated. You can read about changes or additions in this version history.
March 14, 2024 – Initial version
03/27/2024 – New updates from SUSE added
April 1, 2024 – New updates from Debian added
04/08/2024 – New updates from SUSE added
April 15, 2024 – New updates of Ubuntu added
April 17, 2024 – New updates from Amazon added
April 29, 2024 – New updates from Red Hat added
+++ Editorial note: This text was generated based on current BSI data and will be updated in a data-driven manner depending on the warning situation. We accept feedback and comments at [email protected]. +++
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