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Out-of-bounds Read Affecting libssh2 package, versions <0:1.4.3-12.amzn2.2.1

Severity

 Recommended
0.0
medium
0
10

Based on Amazon Linux security rating

    Threat Intelligence

    EPSS
    3.32% (92nd percentile)

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  • Snyk ID SNYK-AMZN2-LIBSSH2-1671907
  • published 27 Sep 2021
  • disclosed 25 Mar 2019
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Introduced: 25 Mar 2019

CVE-2019-3861 Open this link in a new tab
CWE-125 Open this link in a new tab

How to fix?

Upgrade Amazon-Linux:2 libssh2 to version 0:1.4.3-12.amzn2.2.1 or higher.
This issue was patched in ALAS2-2019-1263.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libssh2 package and not the libssh2 package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 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.

References