National Vulnerability Database

National Vulnerability Database

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    Vulnerabilities Detail

CVE-2016-0787 Detail

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."

Source:  MITRE
Description Last Modified:  04/13/2016

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 5.9 MEDIUM
Vector: AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N (V3 legend)
Impact Score: 3.6
Exploitability Score: 2.2

Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): None
Availability (A): None

CVSS v2.0 Severity and Metrics:

Base Score: 4.3 MEDIUM
Vector: (AV:N/AC:M/Au:N/C:P/I:N/A:N) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 8.6

Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): None
Availability (A): None
Additional Information:
Allows unauthorized disclosure of information

References to Advisories, Solutions, and Tools

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

Technical Details

Vulnerability Type (View All)

  • Information Leak / Disclosure (CWE-200)

Change History

10 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2016-0787
NVD Published Date:
04/13/2016
NVD Last Modified:
10/30/2018