Debian dla-4169 : dropbear - security update

medium Nessus Plugin ID 236887

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-4169 advisory.

------------------------------------------------------------------------- Debian LTS Advisory DLA-4169-1 [email protected] https://www.debian.org/lts/security/ Guilhem Moulin May 17, 2025 https://wiki.debian.org/LTS
-------------------------------------------------------------------------

Package : dropbear Version : 2020.81-3+deb11u3 CVE ID : CVE-2025-47203

Marcin Nowak discovered that dbclient(1) hostname arguments with a comma (for multihop) are passed to the shell which could result in running arbitrary shell commands locally. That could be a security issue in situations where dbclient(1) is passed untrusted hostname arguments.

For Debian 11 bullseye, this problem has been fixed in version 2020.81-3+deb11u3.

We recommend that you upgrade your dropbear packages.

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

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 dropbear packages.

Plugin Details

Severity: Medium

ID: 236887

File Name: debian_DLA-4169.nasl

Version: 1.1

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 5/17/2025

Updated: 5/17/2025

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.8

CVSS v2

Risk Factor: Low

Base Score: 2.6

Temporal Score: 1.9

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

CVSS Score Source: CVE-2025-47203

CVSS v3

Risk Factor: Medium

Base Score: 4.5

Temporal Score: 3.9

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

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:dropbear, p-cpe:/a:debian:debian_linux:dropbear-initramfs, p-cpe:/a:debian:debian_linux:dropbear-bin, p-cpe:/a:debian:debian_linux:dropbear-run

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

Exploit Ease: No known exploits are available

Patch Publication Date: 5/17/2025

Vulnerability Publication Date: 5/7/2025

Reference Information

CVE: CVE-2025-47203

Detections

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