Vulnerability DatabaseCVE-2016-0787
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CVE-2016-0787
Published:April 13, 2016
Updated:September 21, 2026
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."
Related Resources (13)
https://puppet.com/security/cve/CVE-2016-0787
http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177980.html
https://kc.mcafee.com/corporate/index?page=content&id=SB10156
http://www.securityfocus.com/bid/82514
https://www.libssh2.org/CVE-2016-0787.patch
http://www.debian.org/security/2016/dsa-3487
https://security.gentoo.org/glsa/201606-12
https://www.libssh2.org/adv_20160223.html
https://bto.bluecoat.com/security-advisory/sa120
http://lists.opensuse.org/opensuse-updates/2016-03/msg00008.html
http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178573.html
https://access.redhat.com/security/cve/CVE-2016-0787
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CVSS v4
Base Score:
8.2
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.9
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
Exposure of Sensitive Information to an Unauthorized Actor
CWE-200
EPSS
Base Score:
2.50