CVE-2016-0787

Published: Apr 13, 2016Modified: May 6, 2026

5.9

Vector

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploitability: 2.2 / Impact: 3.6

Source: 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."

Affected (6)

Products: Fedoraproject: Fedora · Opensuse: Opensuse · Libssh2: Libssh2 · +1 more

Show all products

Fedoraproject: Fedora · Opensuse: Opensuse · Libssh2: Libssh2 · Debian: Debian Linux

1 product

1 product

1 product

1 product

Configuration A

2 vulnerable

Vulnerable Software	Affected Versions
Fedoraproject Fedora	Version 22
Fedoraproject Fedora	Version 23

Configuration B

1 vulnerable

Vulnerable Software	Affected Versions
Opensuse Opensuse	Version 13.2

Configuration C

1 vulnerable

Vulnerable Software	Affected Versions
Libssh2 Libssh2	Up to 1.6.0

Configuration D

2 vulnerable

Vulnerable Software	Affected Versions
Debian Debian Linux	Version 7.0
Debian Debian Linux	Version 8.0

Related CWEs

Exposure of Sensitive Information to an Unauthorized Actor

The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

References (24)

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

Timeline

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