dbclient in Dropbear SSH before 2025.88 allows command injection via an untrusted hostname argument, because a shell is used.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - dbclient in Dropbear SSH before 2025.88 allows command injection via an untrusted hostname argument,     because a shell is used. (CVE-2025-47203)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote Fedora 41 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2025-23ccf778c9 advisory.

    Update to 2025.88 (rhbz#2364904)

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

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

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                debian-lts@lists.debian.org     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.

ID	Name	Product	Family	Severity
251907	Linux Distros Unpatched Vulnerability : CVE-2025-47203	Nessus	Misc.	medium
237612	Fedora 41 : dropbear (2025-23ccf778c9)	Nessus	Fedora Local Security Checks	medium
236887	Debian dla-4169 : dropbear - security update	Nessus	Debian Local Security Checks	medium

Detections

Analytics

CVE-2025-47203

medium

Tenable Plugins

medium

medium

medium