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Information Exposure Affecting libssh2 package, versions <1.4.3-4.1+deb8u1

0.0
medium

Snyk CVSS

    Attack Complexity High
    Confidentiality High

    Threat Intelligence

    EPSS 0.55% (78th percentile)
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NVD
5.9 medium
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Red Hat
5.4 medium

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  • Snyk ID SNYK-DEBIAN8-LIBSSH2-279738
  • published 13 Apr 2016
  • disclosed 13 Apr 2016
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Introduced: 13 Apr 2016

CVE-2016-0787 Open this link in a new tab
CWE-200 Open this link in a new tab

How to fix?

Upgrade Debian:8 libssh2 to version 1.4.3-4.1+deb8u1 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 Debian. See How to fix? for Debian:8 relevant fixed versions and status.

The diffie_hellman_sha256 function in kex.c in libssh2 before 1.7.0 improperly truncates secrets to 128 or 256 bits, which makes it easier for man-in-the-middle attackers to decrypt or intercept SSH sessions via unspecified vectors, aka a "bits/bytes confusion bug."

References