CVE-2016-0787

Published on: 04/13/2016 12:00:00 AM UTC

Last Modified on: 03/23/2021 11:27:12 PM UTC

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

Certain versions of Debian Linux from Debian contain the following vulnerability:

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."

  • CVE-2016-0787 has been assigned by URL Logo [email protected] to track the vulnerability - currently rated as MEDIUM severity.

CVSS3 Score: 5.9 - MEDIUM

Attack
Vector
Attack
Complexity
Privileges
Required
User
Interaction
NETWORK HIGH NONE NONE
Scope Confidentiality
Impact
Integrity
Impact
Availability
Impact
UNCHANGED HIGH NONE NONE

CVSS2 Score: 4.3 - MEDIUM

Access
Vector
Access
Complexity
Authentication
NETWORK MEDIUM NONE
Confidentiality
Impact
Integrity
Impact
Availability
Impact
PARTIAL NONE NONE

CVE References

Description Tags Link
libssh2 Security Advisory: Truncated Difffie-Hellman secret length Vendor Advisory
www.libssh2.org
text/html
URL Logo CONFIRM www.libssh2.org/adv_20160223.html
Broadcom Support Portal bto.bluecoat.com
text/html
URL Logo CONFIRM bto.bluecoat.com/security-advisory/sa120
CVE-2016-0787 - libssh2 Vulnerability | Puppet puppet.com
text/html
URL Logo CONFIRM puppet.com/security/cve/CVE-2016-0787
Debian -- Security Information -- DSA-3487-1 libssh2 www.debian.org
Depreciated Link
text/html
URL Logo DEBIAN DSA-3487
Patch
www.libssh2.org
text/x-diff
URL Logo CONFIRM www.libssh2.org/CVE-2016-0787.patch
RETIRED: libssh2 'src/kex.c' Security Bypass Vulnerability cve.report (archive)
text/html
URL Logo BID 82514
[SECURITY] Fedora 22 Update: libssh2-1.5.0-2.fc22 lists.fedoraproject.org
text/html
URL Logo FEDORA FEDORA-2016-7942ee2cc5
libssh and libssh2: Multiple vulnerabilities (GLSA 201606-12) — Gentoo security Third Party Advisory
security.gentoo.org
text/html
URL Logo GENTOO GLSA-201606-12
[SECURITY] Fedora 23 Update: libssh2-1.6.0-4.fc23 lists.fedoraproject.org
text/html
URL Logo FEDORA FEDORA-2016-215a2219b1
Oracle Linux Bulletin - January 2016 www.oracle.com
text/html
URL Logo CONFIRM www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
openSUSE-SU-2016:0639-1: moderate: Security update for libssh2_org lists.opensuse.org
text/html
URL Logo SUSE openSUSE-SU-2016:0639
McAfee Security Bulletin: McAfee Web Gateway update fixes multiple vulnerabilities kc.mcafee.com
text/html
URL Logo CONFIRM kc.mcafee.com/corporate/index?page=content&id=SB10156

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
Operating
System
DebianDebian Linux7.0AllAllAll
Operating
System
DebianDebian Linux8.0AllAllAll
Operating
System
DebianDebian Linux7.0AllAllAll
Operating
System
DebianDebian Linux8.0AllAllAll
Operating
System
FedoraprojectFedora22AllAllAll
Operating
System
FedoraprojectFedora23AllAllAll
Operating
System
FedoraprojectFedora22AllAllAll
Operating
System
FedoraprojectFedora23AllAllAll
ApplicationLibssh2Libssh2AllAllAllAll
Operating
System
OpensuseOpensuse13.2AllAllAll
Operating
System
OpensuseOpensuse13.2AllAllAll
  • cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*:
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*:
  • cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*:
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*:
  • cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:*:
  • cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:*:
  • cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:*:
  • cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:*:
  • cpe:2.3:a:libssh2:libssh2:*:*:*:*:*:*:*:*:
  • cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*:
  • cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*: