Resource Management Errors Affecting openssh package, versions <1:4.3p2-4


low

Snyk CVSS

    Attack Complexity Low
    Availability High

    Threat Intelligence

    EPSS 91.23% (99th percentile)
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NVD
7.5 high

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  • Snyk ID SNYK-DEBIAN11-OPENSSH-522289
  • published 27 Sep 2006
  • disclosed 27 Sep 2006

How to fix?

Upgrade Debian:11 openssh to version 1:4.3p2-4 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 Debian. See How to fix? for Debian:11 relevant fixed versions and status.

sshd in OpenSSH before 4.4, when using the version 1 SSH protocol, allows remote attackers to cause a denial of service (CPU consumption) via an SSH packet that contains duplicate blocks, which is not properly handled by the CRC compensation attack detector.