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      Last Modified:  11/02/2017      View Analysis Description

Quick Info

CVE Dictionary Entry:
CVE-2017-3736
Original release date:
11/02/2017
Last revised:
02/13/2018
Source:
US-CERT/NIST

Impact

CVSS Severity (version 3.0):
CVSS v3 Base Score:
6.5 Medium
Vector:
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N (legend)
Impact Score:
3.6
Exploitability Score:
2.8
CVSS Version 3 Metrics:
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 Severity (version 2.0):
CVSS v2 Base Score:
4.0 MEDIUM
Vector:
(AV:N/AC:L/Au:S/C:P/I:N/A:N) (legend)
Impact Subscore:
2.9
Exploitability Subscore:
8.0
CVSS Version 2 Metrics:
Access Vector:
Network exploitable
Access Complexity:
Low
Authentication:
Required to exploit
Impact Type:
Allows unauthorized disclosure of information

References to Advisories, Solutions, and Tools

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Hyperlink Resource Type Source Name
http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html External Source CONFIRM http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
http://www.securityfocus.com/bid/101666 Third Party Advisory; VDB Entry External Source BID 101666
http://www.securitytracker.com/id/1039727 Third Party Advisory; VDB Entry External Source SECTRACK 1039727
https://github.com/openssl/openssl/commit/4443cf7aa0099e5ce615c18cee249fff77fb0871 External Source MISC https://github.com/openssl/openssl/commit/4443cf7aa0099e5ce615c18cee249fff77fb0871
https://security.FreeBSD.org/advisories/FreeBSD-SA-17:11.openssl.asc Third Party Advisory External Source FREEBSD FreeBSD-SA-17:11
https://security.gentoo.org/glsa/201712-03 External Source GENTOO GLSA-201712-03
https://security.netapp.com/advisory/ntap-20171107-0002/ Issue Tracking; Third Party Advisory External Source CONFIRM https://security.netapp.com/advisory/ntap-20171107-0002/
https://security.netapp.com/advisory/ntap-20180117-0002/ External Source CONFIRM https://security.netapp.com/advisory/ntap-20180117-0002/
https://www.debian.org/security/2017/dsa-4017 Issue Tracking; Third Party Advisory External Source DEBIAN DSA-4017
https://www.debian.org/security/2017/dsa-4018 Issue Tracking; Third Party Advisory External Source DEBIAN DSA-4018
https://www.openssl.org/news/secadv/20171102.txt Issue Tracking; Vendor Advisory External Source CONFIRM https://www.openssl.org/news/secadv/20171102.txt
https://www.tenable.com/security/tns-2017-14 Issue Tracking; Third Party Advisory External Source CONFIRM https://www.tenable.com/security/tns-2017-14
https://www.tenable.com/security/tns-2017-15 External Source CONFIRM https://www.tenable.com/security/tns-2017-15

Technical Details

Vulnerability Type (View All)

  • Information Leak / Disclosure (CWE-200)

Change History 11 change records found - show changes