CVE-2024-39894 Affecting openssh package, versions <1:9.6p1-3ubuntu13.4


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.04% (15th percentile)

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  • Snyk IDSNYK-UBUNTU2404-OPENSSH-7417684
  • published10 Jul 2024
  • disclosed2 Jul 2024

Introduced: 2 Jul 2024

CVE-2024-39894  (opens in a new tab)

How to fix?

Upgrade Ubuntu:24.04 openssh to version 1:9.6p1-3ubuntu13.4 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 Ubuntu. See How to fix? for Ubuntu:24.04 relevant fixed versions and status.

OpenSSH 9.5 through 9.7 before 9.8 sometimes allows timing attacks against echo-off password entry (e.g., for su and Sudo) because of an ObscureKeystrokeTiming logic error. Similarly, other timing attacks against keystroke entry could occur.

CVSS Scores

version 3.1