Debian dla-4698 : spice-vdagent - security update

medium Nessus Plugin ID 329313

Synopsis

The remote Debian host is missing one or more security-related updates.

Description

The remote Debian 11 / 12 host has a package installed that is affected by multiple vulnerabilities as referenced in the dla-4698 advisory.

- ------------------------------------------------------------------------- Debian LTS Advisory DLA-4698-1 [email protected] https://www.debian.org/lts/security/ Abhijith PA July 24, 2026 https://wiki.debian.org/LTS
- -------------------------------------------------------------------------

Package : spice-vdagent Version : 0.20.0-2+deb11u1 0.22.1-3+deb12u1 CVE ID : CVE-2026-57965 CVE-2026-57966 Debian Bug : 1141317 1141318

Two vulnerabilities were discovered in spice-vdagent, an agent program under the SPICE project to ease the remote access to virtual machines such as clipboard sharing, auto screen resizing.

CVE-2026-57965

A malicious or compromised SPICE host can trigger an integer overflow by sending a specially crafted message. This vulnerability can lead to a heap buffer overflow, causing the spice-vdagent daemon to crash and resulting in a Denial of Service (DoS) for the virtual machine.

CVE-2026-57966

A path traversal vulnerability was found in spice-vdagent. This flaw allows a malicious or compromised SPICE host to write arbitrary files to any location on the guest operating system. This occurs because the filename provided by the SPICE host during file transfers is not properly sanitized before being used. An attacker could exploit this to write to sensitive locations with the privileges of the spice-vdagent process, typically the logged-in user.

For Debian 11 bullseye, these problems have been fixed in version 0.20.0-2+deb11u1.

For Debian 12 bookworm, these problems have been fixed in version 0.22.1-3+deb12u1.

We recommend that you upgrade your spice-vdagent packages.

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

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

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

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

Solution

Upgrade the spice-vdagent packages.

Plugin Details

Severity: Medium

ID: 329313

File Name: debian_DLA-4698.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Debian Local Security Checks

Published: 7/24/2026

Updated: 7/24/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.5

Percentile: 51.99

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2026-57965

CVSS v3

Risk Factor: Medium

Base Score: 5.1

Temporal Score: 4.5

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

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

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:11.0, cpe:/o:debian:debian_linux:12.0, p-cpe:/a:debian:debian_linux:spice-vdagent

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

Exploit Ease: No known exploits are available

Patch Publication Date: 7/24/2026

Vulnerability Publication Date: 6/29/2026

Reference Information

CVE: CVE-2026-57965, CVE-2026-57966

Detections

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