Attacker Value
Unknown
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Exploitability
Unknown
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User Interaction
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Privileges Required
Unknown
Attack Vector
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0

CVE-2016-0739

Disclosure Date: April 13, 2016
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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.”

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CVSS V3 Severity and Metrics
Base Score:
None
Impact Score:
Unknown
Exploitability Score:
Unknown
Vector:
Unknown
Attack Vector (AV):
Unknown
Attack Complexity (AC):
Unknown
Privileges Required (PR):
Unknown
User Interaction (UI):
Unknown
Scope (S):
Unknown
Confidentiality (C):
Unknown
Integrity (I):
Unknown
Availability (A):
Unknown

General Information

Vendors

  • canonical,
  • debian,
  • fedoraproject,
  • libssh,
  • redhat

Products

  • debian linux 7.0,
  • debian linux 8.0,
  • enterprise linux 7.0,
  • fedora 22,
  • fedora 23,
  • libssh,
  • ubuntu linux 12.04,
  • ubuntu linux 14.04,
  • ubuntu linux 15.10
Technical Analysis