Upstream information

CVE-2016-0701 at MITRE

Description

The DH_check_pub_key function in crypto/dh/dh_check.c in OpenSSL 1.0.2 before 1.0.2f does not ensure that prime numbers are appropriate for Diffie-Hellman (DH) key exchange, which makes it easier for remote attackers to discover a private DH exponent by making multiple handshakes with a peer that chose an inappropriate number, as demonstrated by a number in an X9.42 file.

SUSE information

CVSS v2 Scores
  National Vulnerability Database SUSE
Base Score 2.57 7.12
Vector AV:N/AC:H/Au:N/C:P/I:N/A:N AV:N/AC:M/Au:N/C:C/I:N/A:N
Access Vector Network Network
Access Complexity High Medium
Authentication None None
Confidentiality Impact Partial Complete
Integrity Impact None None
Availability Impact None None
CVSS v3 Scores
  National Vulnerability Database
Base Score 3.7
Vector AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Access Vector Network
Access Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact Low
Integrity Impact None
Availability Impact None

Note from the SUSE Security Team

This problem only affects openssl 1.0.2. Older openssl versions are not affected. So SUSE Linux Enterprise 12 and older versions are not affected, neither is openSUSE 42.1 or older.

SUSE Bugzilla entries: 963410 [RESOLVED / MOVED], 963413 [RESOLVED / WORKSFORME]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
openSUSE Evergreen 11.4
  • libopenssl-devel >= 1.0.1p-71.1
  • libopenssl-devel-32bit >= 1.0.1p-71.1
  • libopenssl1_0_0 >= 1.0.1p-71.1
  • libopenssl1_0_0-32bit >= 1.0.1p-71.1
  • libopenssl1_0_0-debuginfo >= 1.0.1p-71.1
  • libopenssl1_0_0-debuginfo-32bit >= 1.0.1p-71.1
  • libopenssl1_0_0-debuginfo-x86 >= 1.0.1p-71.1
  • libopenssl1_0_0-x86 >= 1.0.1p-71.1
  • openssl >= 1.0.1p-71.1
  • openssl-debuginfo >= 1.0.1p-71.1
  • openssl-debugsource >= 1.0.1p-71.1
  • openssl-doc >= 1.0.1p-71.1
Patchnames:
2016-293
openSUSE Tumbleweed
  • libopenssl-devel >= 1.0.2j-2.2
  • libopenssl-devel-32bit >= 1.0.2j-2.2
  • libopenssl1_0_0 >= 1.0.2j-2.2
  • libopenssl1_0_0-32bit >= 1.0.2j-2.2
  • libopenssl1_0_0-hmac >= 1.0.2j-2.2
  • libopenssl1_0_0-hmac-32bit >= 1.0.2j-2.2
  • libopenssl1_0_0-steam >= 1.0.2h-4.1
  • libopenssl1_0_0-steam-32bit >= 1.0.2h-4.1
  • openssl >= 1.0.2j-2.2
  • openssl-doc >= 1.0.2j-2.2
Patchnames:
openSUSE Tumbleweed GA libopenssl-devel
openSUSE Tumbleweed GA libopenssl1_0_0-steam