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CVE
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CVE-2016-0787Date: (C)2016-04-28   (M)2018-05-10


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."

CVSS Score and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:CVSS V2 Severity:
CVSS Score : 5.9CVSS Score : 4.3
Exploit Score: 2.2Exploit Score: 8.6
Impact Score: 3.6Impact Score: 2.9
 
CVSS V3 Metrics:CVSS V2 Metrics:
Attack Vector: NETWORKAccess Vector: NETWORK
Attack Complexity: HIGHAccess Complexity: MEDIUM
Privileges Required: NONEAuthentication: NONE
User Interaction: NONEConfidentiality: PARTIAL
Scope: UNCHANGEDIntegrity: NONE
Confidentiality: HIGHAvailability: NONE
Integrity: NONE 
Availability: NONE 
  
Reference:
BID-82514
DSA-3487
FEDORA-2016-215a2219b1
FEDORA-2016-7942ee2cc5
GLSA-201606-12
http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
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://www.libssh2.org/CVE-2016-0787.patch
https://www.libssh2.org/adv_20160223.html
openSUSE-SU-2016:0639

CPE    6
cpe:/a:libssh2:libssh2:1.6.0
cpe:/o:fedoraproject:fedora:22
cpe:/o:fedoraproject:fedora:23
cpe:/o:novell:opensuse:13.2
...
CWE    1
CWE-200
OVAL    10
oval:org.secpod.oval:def:602380
oval:org.secpod.oval:def:501776
oval:org.secpod.oval:def:110232
oval:org.secpod.oval:def:110280
...

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