National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2017-3736 Detail

Current Description

There is a carry propagating bug in the x86_64 Montgomery squaring procedure 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.

Source:  MITRE
Description Last Modified:  11/02/2017
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 6.5 MEDIUM
Vector: AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N (V3 legend)
Impact Score: 3.6
Exploitability Score: 2.8


Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): None
Availability (A): None

CVSS v2.0 Severity and Metrics:

Base Score: 4.0 MEDIUM
Vector: (AV:N/AC:L/Au:S/C:P/I:N/A:N) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 8.0


Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (AU): Single
Confidentiality (C): Partial
Integrity (I): None
Availability (A): None
Additional Information:
Allows unauthorized disclosure of information

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html
http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html
http://www.securityfocus.com/bid/101666 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1039727 Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2018:0998
https://access.redhat.com/errata/RHSA-2018:2185
https://access.redhat.com/errata/RHSA-2018:2186
https://access.redhat.com/errata/RHSA-2018:2187
https://github.com/openssl/openssl/commit/4443cf7aa0099e5ce615c18cee249fff77fb0871
https://security.FreeBSD.org/advisories/FreeBSD-SA-17:11.openssl.asc Third Party Advisory
https://security.gentoo.org/glsa/201712-03
https://security.netapp.com/advisory/ntap-20171107-0002/ Issue Tracking Third Party Advisory
https://security.netapp.com/advisory/ntap-20180117-0002/
https://www.debian.org/security/2017/dsa-4017 Issue Tracking Third Party Advisory
https://www.debian.org/security/2017/dsa-4018 Issue Tracking Third Party Advisory
https://www.openssl.org/news/secadv/20171102.txt Issue Tracking Vendor Advisory
https://www.tenable.com/security/tns-2017-14 Issue Tracking Third Party Advisory
https://www.tenable.com/security/tns-2017-15

Technical Details

Vulnerability Type (View All)

  • Information Leak / Disclosure (CWE-200)

Change History

15 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-3736
NVD Published Date:
11/02/2017
NVD Last Modified:
07/18/2018