CVE-2016-0787

5.9 MEDIUM
Published: April 13, 2016 Modified: May 06, 2026
View on NVD

Description

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."

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177980.html
Source: secalert@redhat.com
http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178573.html
Source: secalert@redhat.com
http://lists.opensuse.org/opensuse-updates/2016-03/msg00008.html
Source: secalert@redhat.com
http://www.debian.org/security/2016/dsa-3487
Source: secalert@redhat.com
http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
Source: secalert@redhat.com
http://www.securityfocus.com/bid/82514
Source: secalert@redhat.com
https://bto.bluecoat.com/security-advisory/sa120
Source: secalert@redhat.com
https://kc.mcafee.com/corporate/index?page=content&id=SB10156
Source: secalert@redhat.com
https://puppet.com/security/cve/CVE-2016-0787
Source: secalert@redhat.com
https://security.gentoo.org/glsa/201606-12
Source: secalert@redhat.com
Third Party Advisory
https://www.libssh2.org/CVE-2016-0787.patch
Source: secalert@redhat.com
Patch
https://www.libssh2.org/adv_20160223.html
Source: secalert@redhat.com
Vendor Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177980.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178573.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://lists.opensuse.org/opensuse-updates/2016-03/msg00008.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.debian.org/security/2016/dsa-3487
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.securityfocus.com/bid/82514
Source: af854a3a-2127-422b-91ae-364da2661108
https://bto.bluecoat.com/security-advisory/sa120
Source: af854a3a-2127-422b-91ae-364da2661108
https://kc.mcafee.com/corporate/index?page=content&id=SB10156
Source: af854a3a-2127-422b-91ae-364da2661108
https://puppet.com/security/cve/CVE-2016-0787
Source: af854a3a-2127-422b-91ae-364da2661108
https://security.gentoo.org/glsa/201606-12
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://www.libssh2.org/CVE-2016-0787.patch
Source: af854a3a-2127-422b-91ae-364da2661108
Patch
https://www.libssh2.org/adv_20160223.html
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory

24 reference(s) from NVD

Quick Stats

CVSS v3 Score
5.9 / 10.0
EPSS (Exploit Probability)
3.1%
87th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-200

Affected Vendors

opensuse libssh2 debian fedoraproject

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