CVE - CVE-2017-3732

CVE-ID
CVE-2017-3732	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://github.com/openssl/openssl/commit/a59b90bf491410f1f2bc4540cc21f1980fd14c5b CONFIRM:https://www.openssl.org/news/secadv/20170126.txt CONFIRM:http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html CONFIRM:http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html CONFIRM:https://www.tenable.com/security/tns-2017-04 CONFIRM:http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html CONFIRM:https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03838en_us FREEBSD:FreeBSD-SA-17:02 URL:https://security.FreeBSD.org/advisories/FreeBSD-SA-17:02.openssl.asc GENTOO:GLSA-201702-07 URL:https://security.gentoo.org/glsa/201702-07 REDHAT:RHSA-2018:2185 URL:https://access.redhat.com/errata/RHSA-2018:2185 REDHAT:RHSA-2018:2186 URL:https://access.redhat.com/errata/RHSA-2018:2186 REDHAT:RHSA-2018:2187 URL:https://access.redhat.com/errata/RHSA-2018:2187 REDHAT:RHSA-2018:2568 URL:https://access.redhat.com/errata/RHSA-2018:2568 REDHAT:RHSA-2018:2575 URL:https://access.redhat.com/errata/RHSA-2018:2575 REDHAT:RHSA-2018:2713 URL:https://access.redhat.com/errata/RHSA-2018:2713 BID:95814 URL:http://www.securityfocus.com/bid/95814 SECTRACK:1037717 URL:http://www.securitytracker.com/id/1037717
Assigning CNA
OpenSSL Software Foundation
Date Entry Created
20161216	Disclaimer: The entry creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20161216)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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