Out-of-bounds Read Affecting libssh2 package, versions <1.8.1-r0


0.0
critical

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Availability High

    Threat Intelligence

    EPSS 3.32% (92nd percentile)
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NVD
9.1 critical
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SUSE
3.5 low
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Red Hat
5 medium

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  • Snyk ID SNYK-ALPINE37-LIBSSH2-467489
  • published 22 Sep 2019
  • disclosed 22 Sep 2019
  • credit Unknown

How to fix?

Upgrade Alpine:3.7 libssh2 to version 1.8.1-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libssh2 package and not the libssh2 package as distributed by Alpine. See How to fix? for Alpine:3.7 relevant fixed versions and status.

An out of bounds read flaw was discovered in libssh2 before 1.8.1 in the way SSH packets with a padding length value greater than the packet length are parsed. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.