PT-2025-20286 · Unknown+1 · Dropbear Ssh+1

Marcin Nowak · Published 2025-05-07 · Updated 2025-09-03 · CVE-2025-47203

Positive Technologies (AI Summary)

CVSS v3.1

4.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Dropbear SSH versions prior to 2025.88

Description The issue allows command injection via an untrusted hostname argument, because a shell is used. This occurs when the dbclient in Dropbear SSH is used with an untrusted hostname.

Recommendations For versions prior to 2025.88, update to version 2025.88 or later to resolve the issue. As a temporary workaround, consider validating and sanitizing all hostname arguments to prevent command injection. Restrict access to the dbclient until the issue is resolved.

Fix

OS Command Injection

Weakness Enumeration

CWE-78

Related Identifiers

CVE-2025-47203

DLA-4169-1

MGASA-2025-0158

Affected Products

Debian

Dropbear Ssh

References · 29

• https://nvd.nist.gov/vuln/detail/CVE-2025-47203 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-47203 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-4169-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2025-47203 · Security Note
• https://osv.dev/vulnerability/CVE-2025-47203 · Vendor Advisory
• https://osv.dev/vulnerability/ALPINE-CVE-2025-47203 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2025-47203 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2025-47203 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2025-0158.html · Security Note
• https://osv.dev/vulnerability/MGASA-2025-0158 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-47203 · Vendor Advisory
• https://github.com/mkj/dropbear/blob/master/CHANGES · Note
• https://github.com/mkj/dropbear/blob/master/src/cli-main.c · Note
• http://openwall.com/lists/oss-security/2025/05/13/3 · Note
• https://security.alpinelinux.org/vuln/CVE-2025-47203 · Note