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.
References
Link Providers
http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html cve-icon cve-icon
http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html cve-icon cve-icon
http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html cve-icon cve-icon
http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html cve-icon cve-icon
http://www.securityfocus.com/bid/101666 cve-icon cve-icon
http://www.securitytracker.com/id/1039727 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2018:0998 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2018:2185 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2018:2186 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2018:2187 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2018:2568 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2018:2575 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2018:2713 cve-icon cve-icon
https://github.com/openssl/openssl/commit/4443cf7aa0099e5ce615c18cee249fff77fb0871 cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2017-3736 cve-icon
https://security.FreeBSD.org/advisories/FreeBSD-SA-17:11.openssl.asc cve-icon cve-icon
https://security.gentoo.org/glsa/201712-03 cve-icon cve-icon
https://security.netapp.com/advisory/ntap-20171107-0002/ cve-icon cve-icon
https://security.netapp.com/advisory/ntap-20180117-0002/ cve-icon cve-icon
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbst03881en_us cve-icon cve-icon
https://www.cve.org/CVERecord?id=CVE-2017-3736 cve-icon
https://www.debian.org/security/2017/dsa-4017 cve-icon cve-icon
https://www.debian.org/security/2017/dsa-4018 cve-icon cve-icon
https://www.openssl.org/news/secadv/20171102.txt cve-icon cve-icon cve-icon
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html cve-icon cve-icon
https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html cve-icon cve-icon
https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html cve-icon cve-icon
https://www.tenable.com/security/tns-2017-14 cve-icon cve-icon
https://www.tenable.com/security/tns-2017-15 cve-icon cve-icon
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: openssl

Published: 2017-11-02T17:00:00Z

Updated: 2024-09-16T20:12:39.274Z

Reserved: 2016-12-16T00:00:00

Link: CVE-2017-3736

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2017-11-02T17:29:00.243

Modified: 2019-04-23T19:30:04.427

Link: CVE-2017-3736

cve-icon Redhat

Severity : Moderate

Publid Date: 2017-11-02T00:00:00Z

Links: CVE-2017-3736 - Bugzilla