Double Free Affecting openssh-portable package, versions [,9.1.p1)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

Exploit Maturity
Proof of concept
EPSS
1.17% (85th percentile)

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  • Snyk IDSNYK-UNMANAGED-OPENSSHPORTABLE-3310431
  • published3 Feb 2023
  • disclosed3 Feb 2023
  • creditMantas Mikulenas

Introduced: 3 Feb 2023

CVE-2023-25136  (opens in a new tab)
CWE-415  (opens in a new tab)

How to fix?

Upgrade openssh-portable to version 9.1.p1 or higher.

Overview

Affected versions of this package are vulnerable to Double Free during options.kex_algorithms handling. The double free can be triggered by an unauthenticated attacker in the default configuration.

CVSS Scores

version 3.1