Upstream information

CVE-2017-3733 at MITRE

Description

During a renegotiation handshake if the Encrypt-Then-Mac extension is negotiated where it was not in the original handshake (or vice-versa) then this can cause OpenSSL 1.1.0 before 1.1.0e to crash (dependent on ciphersuite). Both clients and servers are affected.

SUSE information

CVSS v2 Scores
  National Vulnerability Database
Base Score 4.96
Vector AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
CVSS v3 Scores
  National Vulnerability Database
Base Score 7.5
Vector AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Access Vector Network
Access Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High

Note from the SUSE Security Team

This issue does not affect SUSE Linux Enterprise or openSUSE.

SUSE Bugzilla entry: 1025661 [RESOLVED / WORKSFORME]

No SUSE Security Announcements cross referenced.