Upstream information

CVE-2016-0739 at MITRE

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."

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having moderate severity.

CVSS v2 Scores
  National Vulnerability Database SUSE
Base Score 4.3 5.8
Vector AV:N/AC:M/Au:N/C:P/I:N/A:N AV:N/AC:M/Au:N/C:P/I:P/A:N
Access Vector Network Network
Access Complexity Medium Medium
Authentication None None
Confidentiality Impact Partial Partial
Integrity Impact None Partial
Availability Impact None None
CVSS v3 Scores
  National Vulnerability Database
Base Score 5.9
Vector AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Access Vector Network
Access Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact None
Availability Impact None
SUSE Bugzilla entries: 965875 [RESOLVED / FIXED], 967026 [RESOLVED / FIXED]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
SUSE Linux Enterprise Desktop 11 SP4
  • libssh >= 0.2-5.22.1
  • libssh2 >= 0.2-5.22.1
Patchnames:
sledsp4-libssh-12430
SUSE Linux Enterprise Desktop 12
  • libssh >= 0.6.3-11.1
  • libssh4 >= 0.6.3-11.1
Patchnames:
SUSE-SLE-DESKTOP-12-2016-359
SUSE Linux Enterprise Desktop 12 SP1
  • libssh >= 0.6.3-11.1
  • libssh4 >= 0.6.3-11.1
Patchnames:
SUSE-SLE-DESKTOP-12-SP1-2016-359
SUSE Linux Enterprise Desktop 12 SP2
  • libssh4 >= 0.6.3-11.1
Patchnames:
SUSE Linux Enterprise Desktop 12 SP2 GA libssh4
SUSE Linux Enterprise Desktop 12 SP3
  • libssh4 >= 0.6.3-11.1
Patchnames:
SUSE Linux Enterprise Desktop 12 SP3 GA libssh4
SUSE Linux Enterprise Software Development Kit 11 SP4
  • libssh >= 0.2-5.22.1
  • libssh-devel >= 0.2-5.22.1
  • libssh-devel-doc >= 0.2-5.22.1
  • libssh2 >= 0.2-5.22.1
Patchnames:
sdksp4-libssh-12430
SUSE Linux Enterprise Software Development Kit 12
  • libssh >= 0.6.3-11.1
  • libssh-devel >= 0.6.3-11.1
  • libssh-devel-doc >= 0.6.3-11.1
  • libssh4 >= 0.6.3-11.1
Patchnames:
SUSE-SLE-SDK-12-2016-359
SUSE Linux Enterprise Software Development Kit 12 SP1
  • libssh >= 0.6.3-11.1
  • libssh-devel >= 0.6.3-11.1
  • libssh-devel-doc >= 0.6.3-11.1
  • libssh4 >= 0.6.3-11.1
Patchnames:
SUSE-SLE-SDK-12-SP1-2016-359
SUSE Linux Enterprise Software Development Kit 12 SP2
  • libssh-devel >= 0.6.3-11.1
  • libssh-devel-doc >= 0.6.3-11.1
  • libssh4 >= 0.6.3-11.1
Patchnames:
SUSE Linux Enterprise Software Development Kit 12 SP2 GA libssh-devel
SUSE Linux Enterprise Software Development Kit 12 SP3
  • libssh-devel >= 0.6.3-11.1
  • libssh-devel-doc >= 0.6.3-11.1
  • libssh4 >= 0.6.3-11.1
Patchnames:
SUSE Linux Enterprise Software Development Kit 12 SP3 GA libssh-devel
SUSE Linux Enterprise Workstation Extension 12
  • libssh >= 0.6.3-11.1
  • libssh4 >= 0.6.3-11.1
Patchnames:
SUSE-SLE-WE-12-2016-359
SUSE Linux Enterprise Workstation Extension 12 SP1
  • libssh >= 0.6.3-11.1
  • libssh4 >= 0.6.3-11.1
Patchnames:
SUSE-SLE-WE-12-SP1-2016-359
SUSE Linux Enterprise Workstation Extension 12 SP2
  • libssh4 >= 0.6.3-11.1
Patchnames:
SUSE Linux Enterprise Workstation Extension 12 SP2 GA libssh4
SUSE Linux Enterprise Workstation Extension 12 SP3
  • libssh4 >= 0.6.3-11.1
Patchnames:
SUSE Linux Enterprise Workstation Extension 12 SP3 GA libssh4
openSUSE Leap 42.1
  • libssh >= 0.6.3-10.1
  • libssh-debugsource >= 0.6.3-10.1
  • libssh-devel >= 0.6.3-10.1
  • libssh-devel-doc >= 0.6.3-10.1
  • libssh4 >= 0.6.3-10.1
  • libssh4-32bit >= 0.6.3-10.1
  • libssh4-debuginfo >= 0.6.3-10.1
  • libssh4-debuginfo-32bit >= 0.6.3-10.1
Patchnames:
openSUSE-2016-328
openSUSE Leap 42.2
  • libssh-devel >= 0.6.3-11.5
  • libssh4 >= 0.6.3-11.5
Patchnames:
openSUSE Leap 42.2 GA libssh-devel
openSUSE Leap 42.3
  • libssh-devel >= 0.6.3-13.3
  • libssh4 >= 0.6.3-13.3
Patchnames:
openSUSE Leap 42.3 GA libssh-devel


Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification.

Product(s) Source package State
SUSE Linux Enterprise Desktop 11 SP1 libssh Released
SUSE Linux Enterprise Desktop 11 SP2 libssh Released
SUSE Linux Enterprise Desktop 11 SP3 libssh Released
SUSE Linux Enterprise Desktop 11 SP4 libssh Released
SUSE Linux Enterprise Desktop 12 GA libssh Released
SUSE Linux Enterprise Desktop 12 SP1 libssh Released
SUSE Linux Enterprise SDK 11 SP2 libssh Released
SUSE Linux Enterprise SDK 11 SP3 libssh Released
SUSE Linux Enterprise SDK 11 SP4 libssh Released
SUSE Linux Enterprise SDK 12 GA libssh Released
SUSE Linux Enterprise SDK 12 SP1 libssh Released
SUSE Linux Enterprise Workstation Extension 12 GA libssh Released
SUSE Linux Enterprise Workstation Extension 12 SP1 libssh Released