CVE-2016-0739

CVSS V2 Medium 4.3 CVSS V3 Medium 5.9
Description
libssh before 0.7.3 improperly truncates ephemeral secrets generated for the (1) diffie-hellman-group1 and (2) diffie-hellman-group14 key exchange methods to 128 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."
Overview
  • CVE ID
  • CVE-2016-0739
  • Assigner
  • secalert@redhat.com
  • Vulnerability Status
  • Modified
  • Published Version
  • 2016-04-13T17:59:08
  • Last Modified Date
  • 2017-12-09T02:29:04
Weakness Enumerations
CWE URL
CWE-200 http://cwe.mitre.org/data/definitions/200.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:libssh:libssh:*:*:*:*:*:*:*:* 1 OR 0.7.2
cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:M/Au:N/C:P/I:N/A:N
  • Access Vector
  • NETWORK
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • NONE
  • Availability Impact
  • NONE
  • Base Score
  • 4.3
  • Severity
  • MEDIUM
  • Exploitability Score
  • 8.6
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.0
  • Vector String
  • CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • HIGH
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • NONE
  • Base Score
  • 5.9
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 2.2
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178822.html
http://rhn.redhat.com/errata/RHSA-2016-0566.html
https://www.libssh.org/2016/02/23/libssh-0-7-3-security-and-bugfix-release/ Vendor Advisory
http://www.ubuntu.com/usn/USN-2912-1
https://www.libssh.org/security/advisories/CVE-2016-0739.txt Vendor Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2016-February/178058.html
http://www.debian.org/security/2016/dsa-3488
https://security.gentoo.org/glsa/201606-12 Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2016-03/msg00111.html
https://puppet.com/security/cve/CVE-2016-0739
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2016-0739
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-0739
History
Created Old Value New Value Data Type Notes
2022-05-10 08:09:30 Added to TrackCVE
2022-12-02 08:59:07 2016-04-13T17:59Z 2016-04-13T17:59:08 CVE Published Date updated
2022-12-02 08:59:07 2017-12-09T02:29:04 CVE Modified Date updated
2022-12-02 08:59:07 Modified Vulnerability Status updated