<p>Upgrade <code>Amazon-Linux:2</code> <code>libssh2</code> to version 0:1.4.3-12.amzn2.2 or higher.<br>This issue was patched in <code>ALAS2-2019-1199</code>.</p>

Out-of-bounds Write Affecting libssh2 package, versions <0:1.4.3-12.amzn2.2

Threat Intelligence

0.33% (72^nd percentile)

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Snyk ID SNYK-AMZN2-LIBSSH2-1669994
published 27 Sep 2021
disclosed 25 Mar 2019

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Introduced: 25 Mar 2019

CVE-2019-3857 Open this link in a new tab CWE-787 Open this link in a new tab CWE-190 Open this link in a new tab

How to fix?

Upgrade Amazon-Linux:2 libssh2 to version 0:1.4.3-12.amzn2.2 or higher.
This issue was patched in ALAS2-2019-1199.

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 integer overflow flaw which could lead to an out of bounds write was discovered in libssh2 before 1.8.1 in the way SSH_MSG_CHANNEL_REQUEST packets with an exit signal are parsed. A remote attacker who compromises a SSH server may be able to execute code on the client system when a user connects to the server.

References

CVSS Scores

version 3.1

Out-of-bounds Write Affecting libssh2 package, versions <0:1.4.3-12.amzn2.2

Severity

Based on Amazon Linux security rating