Homepage
About Snyk

Double Free Affecting openssh package, versions <1:9.2p1-1

0.0
medium

Snyk CVSS

    Attack Complexity High
    Availability High

    Threat Intelligence

    EPSS 1.1% (85th percentile)
Expand this section
NVD
6.5 medium
Expand this section
Red Hat
6.5 medium

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk ID SNYK-DEBIANUNSTABLE-OPENSSH-3310455
  • published 4 Feb 2023
  • disclosed 3 Feb 2023
Report a new vulnerability Found a mistake?

Introduced: 3 Feb 2023

CVE-2023-25136 Open this link in a new tab
CWE-415 Open this link in a new tab

How to fix?

Upgrade Debian:unstable openssh to version 1:9.2p1-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssh package and not the openssh package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

OpenSSH server (sshd) 9.1 introduced a double-free vulnerability during options.kex_algorithms handling. This is fixed in OpenSSH 9.2. The double free can be leveraged, by an unauthenticated remote attacker in the default configuration, to jump to any location in the sshd address space. One third-party report states "remote code execution is theoretically possible."

References