Information Exposure Affecting openssl package, versions <1.1.0g-1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIANUNSTABLE-OPENSSL-374239
- published2 Nov 2017
- disclosed2 Nov 2017
Introduced: 2 Nov 2017
CVE-2017-3736 (opens in a new tab)How to fix?
Upgrade Debian:unstable openssl to version 1.1.0g-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream openssl package and not the openssl package as distributed by Debian.
See How to fix? for Debian:unstable relevant fixed versions and status.
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
- https://security-tracker.debian.org/tracker/CVE-2017-3736
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbst03881en_us
- https://www.tenable.com/security/tns-2017-14
- https://www.tenable.com/security/tns-2017-15
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-3736
- https://www.debian.org/security/2017/dsa-4017
- https://www.debian.org/security/2017/dsa-4018
- https://security.FreeBSD.org/advisories/FreeBSD-SA-17:11.openssl.asc
- https://security.gentoo.org/glsa/201712-03
- https://github.com/openssl/openssl/commit/4443cf7aa0099e5ce615c18cee249fff77fb0871
- https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
- https://security.netapp.com/advisory/ntap-20171107-0002/
- https://security.netapp.com/advisory/ntap-20180117-0002/
- https://www.openssl.org/news/secadv/20171102.txt
- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
- https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html
- 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.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
- 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://access.redhat.com/errata/RHSA-2018:2568
- https://access.redhat.com/errata/RHSA-2018:2575
- https://access.redhat.com/errata/RHSA-2018:2713
- http://www.securityfocus.com/bid/101666
- http://www.securitytracker.com/id/1039727
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2017-3736