CVE-2016-2178

LOW

Description

The dsa_sign_setup function in crypto/dsa/dsa_ossl.c in OpenSSL through 1.0.2h does not properly ensure the use of constant-time operations, which makes it easier for local users to discover a DSA private key via a timing side-channel attack.

References

http://eprint.iacr.org/2016/594.pdf

http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759

http://lists.opensuse.org/opensuse-security-announce/2016-10/msg00013.html

http://rhn.redhat.com/errata/RHSA-2016-1940.html

http://rhn.redhat.com/errata/RHSA-2016-2957.html

http://rhn.redhat.com/errata/RHSA-2017-1659.html

http://www.openwall.com/lists/oss-security/2016/06/08/2

http://www.openwall.com/lists/oss-security/2016/06/09/8

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/cpujul2017-3236622.html

http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html

http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html

http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html

http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html

http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html

http://www.securityfocus.com/bid/91081

http://www.securitytracker.com/id/1036054

http://www.splunk.com/view/SP-CAAAPSV

http://www.splunk.com/view/SP-CAAAPUE

http://www-01.ibm.com/support/docview.wss?uid=swg21995039

https://access.redhat.com/errata/RHSA-2017:0193

https://access.redhat.com/errata/RHSA-2017:0194

https://access.redhat.com/errata/RHSA-2017:1658

https://bto.bluecoat.com/security-advisory/sa132

https://bugzilla.redhat.com/show_bug.cgi?id=1343400

https://git.openssl.org/?p=openssl.git;a=commit;h=399944622df7bd81af62e67ea967c470534090e2

https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05302448

https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40312

https://nodejs.org/en/blog/vulnerability/september-2016-security-releases/

https://security.FreeBSD.org/advisories/FreeBSD-SA-16:26.openssl.asc

https://security.gentoo.org/glsa/201612-16

https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03856en_us

https://www.openssl.org/news/vulnerabilities.html#y2017

https://www.tenable.com/security/tns-2016-16

https://www.tenable.com/security/tns-2016-20

https://www.tenable.com/security/tns-2016-21

Details

Source: MITRE

Published: 2016-06-20

Updated: 2018-07-12

Type: CWE-200

Risk Information

CVSS v2.0

Base Score: 2.1

Vector: AV:L/AC:L/Au:N/C:P/I:N/A:N

Impact Score: 2.9

Exploitability Score: 3.9

Severity: LOW

CVSS v3.0

Base Score: 5.5

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Impact Score: 3.6

Exploitability Score: 1.8

Severity: MEDIUM