CVE-2017-3736

CVE Details

Release Date:

2018-07-30

Description

There is a carry propagating bug in the x86_64 Montgomery squaringprocedure in OpenSSL before 1.0.2m and 1.1.0 before 1.1.0g. No EC algorithms are affected. Analysis suggests that attacks against RSA and DSA as a result of this defect would be very difficult to perform and are not believed likely. Attacks against DH are considered just feasible (although very difficult) because most of the work necessary to deduce information about a private key may be performed offline. The amount of resources required for such an attack would be very significant and likely only accessible to a limited number of attackers. An attacker would additionally need online access to an unpatched system using the target private key in a scenario with persistent DH parameters and a private key that is shared between multiple clients. This only affects processors that support the BMI1, BMI2 and ADX extensions like Intel Broadwell (5th generation) and later or AMD Ryzen.

See more information about CVE-2017-3736 from MITRE CVE dictionary and NIST NVD

CVSS v2.0 metrics

NOTE: The following CVSS v2.0 metrics and score provided are preliminary and subject to review.

Base Score:	4	Base Metrics:	AV:N/AC:L/Au:S/C:P/I:N/A:N
Access Vector:	Network	Attack Complexity:	Low
Authentication:	Requires single instance	Confidentiality Impact:	Partial
Integrity Impact:	None	Availability Impact:	None

Errata information

Platform	Errata	Release Date
Oracle Linux version 7 (openssl)	ELSA-2018-0998	2018-04-16

This page is generated automatically and has not been checked for errors or omissions. For clarification or corrections please contact the Oracle Linux ULN team