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CVE-2017-3732 Detail

Description

There is a carry propagating bug in the x86_64 Montgomery squaring procedure in OpenSSL 1.0.2 before 1.0.2k and 1.1.0 before 1.1.0d. 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. For example this can occur by default in OpenSSL DHE based SSL/TLS ciphersuites. Note: This issue is very similar to CVE-2015-3193 but must be treated as a separate problem.


Metrics

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CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html Patch  Third Party Advisory 
http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html Patch  Third Party Advisory 
http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html Patch  Third Party Advisory 
http://www.securityfocus.com/bid/95814 Third Party Advisory  VDB Entry 
http://www.securitytracker.com/id/1037717 Third Party Advisory  VDB Entry 
https://access.redhat.com/errata/RHSA-2018:2185 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2018:2186 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2018:2187 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2018:2568 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2018:2575 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2018:2713 Third Party Advisory 
https://github.com/openssl/openssl/commit/a59b90bf491410f1f2bc4540cc21f1980fd14c5b Patch 
https://security.FreeBSD.org/advisories/FreeBSD-SA-17:02.openssl.asc Third Party Advisory 
https://security.gentoo.org/glsa/201702-07 Third Party Advisory 
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03838en_us Third Party Advisory 
https://www.openssl.org/news/secadv/20170126.txt Vendor Advisory 
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html Patch  Third Party Advisory 
https://www.tenable.com/security/tns-2017-04 Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor cwe source acceptance level NIST  

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Change History

18 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-3732
NVD Published Date:
05/04/2017
NVD Last Modified:
08/29/2022
Source:
OpenSSL Software Foundation