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Debian dla-4296 : qemu - security update

high Nessus Plugin ID 261821

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Synopsis

The remote Debian host is missing a security-related update.

Description

The remote Debian 11 host has packages installed that are affected by a vulnerability as referenced in the dla-4296 advisory.

 ------------------------------------------------------------------------- Debian LTS Advisory DLA-4296-1 [email protected] https://www.debian.org/lts/security/ Santiago Ruano Rincn September 08, 2025 https://wiki.debian.org/LTS
 -------------------------------------------------------------------------

 Package : qemu Version : 1:5.2+dfsg-11+deb11u5 CVE ID : CVE-2024-7409 Debian Bug : 1111844

 Two security issues were discovered in QEMU, a fast processor emulator, that could result in denial of service and privilege escalation.

 CVE-2024-7409

 Denial of service (DoS) in the NBD server via improper synchronization during socket closure

 This update removes the usage of the C (Credential) flag for the binfmt_misc registration within the qemu-user-static (and qemu-user-binfmt) packages, as it allowed for privilege escalation when running a suid/sgid binary under qemu-user. This means suid/sgid foreign-architecture binaries are not running with elevated privileges under qemu-user anymore. If you relied on this behavior of qemu-user in the past (running suid/sgid foreign-arch binaries), this will require changes to your deployment.

 In Bullseye the affected packages are qemu-user-static (and qemu-user-binfmt).

 For Debian 11 bullseye, these problems have been fixed in version 1:5.2+dfsg-11+deb11u5.

 We recommend that you upgrade your qemu packages.

 For the detailed security status of qemu please refer to its security tracker page at:
 https://security-tracker.debian.org/tracker/qemu

 Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS Attachment:
 signature.asc Description: PGP signature

Tenable has extracted the preceding description block directly from the Debian security advisory.

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

Solution

Upgrade the qemu packages.

See Also

https://security-tracker.debian.org/tracker/source-package/qemu

https://security-tracker.debian.org/tracker/CVE-2024-7409

https://packages.debian.org/source/bullseye/qemu

Plugin Details

Severity: High

ID: 261821

File Name: debian_DLA-4296.nasl

Version: 1.1

Type: local

Agent: unix

Published: 9/9/2025

Updated: 9/9/2025

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2024-7409

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/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: cpe:/o:debian:debian_linux:11.0, p-cpe:/a:debian:debian_linux:qemu-system-mips, p-cpe:/a:debian:debian_linux:qemu-utils, p-cpe:/a:debian:debian_linux:qemu-system, p-cpe:/a:debian:debian_linux:qemu-system-common, p-cpe:/a:debian:debian_linux:qemu-system-misc, p-cpe:/a:debian:debian_linux:qemu-system-data, p-cpe:/a:debian:debian_linux:qemu-block-extra, p-cpe:/a:debian:debian_linux:qemu-user-static, p-cpe:/a:debian:debian_linux:qemu-system-x86, p-cpe:/a:debian:debian_linux:qemu-system-arm, p-cpe:/a:debian:debian_linux:qemu-system-sparc, p-cpe:/a:debian:debian_linux:qemu-user-binfmt, p-cpe:/a:debian:debian_linux:qemu-system-gui, p-cpe:/a:debian:debian_linux:qemu-guest-agent, p-cpe:/a:debian:debian_linux:qemu, p-cpe:/a:debian:debian_linux:qemu-user, p-cpe:/a:debian:debian_linux:qemu-system-ppc

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

Exploit Ease: No known exploits are available

Patch Publication Date: 9/8/2025

Vulnerability Publication Date: 8/5/2024

Reference Information

CVE: CVE-2024-7409

IAVB: 2024-B-0121-S