Information Exposure Affecting openssh package, versions *


low

Snyk CVSS

    Attack Complexity High
    Confidentiality High
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NVD
5.9 medium
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SUSE
5.9 medium
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Red Hat
5.9 medium

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  • Snyk ID SNYK-DEBIAN11-OPENSSH-574760
  • published 29 Jun 2020
  • disclosed 29 Jun 2020

How to fix?

There is no fixed version for Debian:11 openssh.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssh package and not the openssh package as distributed by Debian:11. See How to fix? for Debian:11 relevant fixed versions and status.

The client side in OpenSSH 5.7 through 8.4 has an Observable Discrepancy leading to an information leak in the algorithm negotiation. This allows man-in-the-middle attackers to target initial connection attempts (where no host key for the server has been cached by the client). NOTE: some reports state that 8.5 and 8.6 are also affected.