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CVE-2016-2178

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.

Published:May 23, 2016

Last Modified:Apr 12, 2025

EPS:Jun 20, 2016

EPSS Score:0.00411

CVSS Score:5.5

Affected Products

Vendor

Product

Action

Vendor

Canonical

Product

Ubuntu Linux

Canonical

Ubuntu Linux

Vendor

Debian

Product

Debian Linux

Debian

Debian Linux

Vendor

Nodejs

Product

Node.js

Nodejs

Node.js

Vendor

Openssl

Product

Openssl

Openssl

Openssl

Vendor

Oracle

Product

Linux

Oracle

Linux

Vendor

Oracle

Product

Solaris

Oracle

Solaris

Vendor

Redhat

Product

Enterprise Linux

Redhat

Enterprise Linux

Vendor

Redhat

Product

Jboss Core Services

Redhat

Jboss Core Services

Vendor

Redhat

Product

Jboss Enterprise Application Platform

Redhat

Jboss Enterprise Application Platform

Vendor

Suse

Product

Linux Enterprise

Suse

Linux Enterprise

Exploits

No exploit reference

Common Weakness Enumeration

CWE-203 Observable Discrepancy

CWE-385 Covert Timing Channel

Common Attack Pattern Enumeration and Classification (CAPEC)

CAPEC-189 Black Box Reverse Engineering

CAPEC-462 Cross-Domain Search Timing

Related CVEs

CVE-2026-13476 (CVSS 7.3) — IBM Informix Dynamic Server 14.10, 15.0, and 12.10 could allow an unauthenticated user to execute arbitrary co…

CVE-2026-13367 (CVSS 7.8) — IBM Informix Dynamic Server 14.10, and 15.0 contain a local privilege escalation vulnerability in the oninit s…

CVE-2026-47337 (CVSS 3.3) — Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling …

CVE-2026-47336 (CVSS 3.3) — Ubuntu Linux 6.8 contains SAUCE patches with a possible use of an uninitialized variable in AppArmor AF_INET/A…

CVE-2026-47335 (CVSS 5.5) — Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor n…

CVE-2026-47334 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly sleep while holding a spinlock…

CVE-2026-47333 (CVSS 7.8) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which can potentially incorrectly compute the si…

CVE-2026-47332 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly validate the size of an intern…

CVE-2026-47331 (CVSS 7.8) — Ubuntu Linux 6.8 contains AppArmor SAUCE patches which fail to acquire a lock when modifying a linked list. An…

CVE-2026-47330 (CVSS 3.3) — Ubuntu Linux 6.8, 7.17 and 7.0 contain AppArmor SAUCE patches which can, under certain circumstances, use an u…

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/2016-09/msg00022.html

http://lists.opensuse.org/opensuse-security-announce/2016-09/msg00023.html

http://lists.opensuse.org/opensuse-security-announce/2016-09/msg00024.html

http://lists.opensuse.org/opensuse-security-announce/2016-09/msg00031.html

http://lists.opensuse.org/opensuse-security-announce/2016-10/msg00005.html

http://lists.opensuse.org/opensuse-security-announce/2016-10/msg00011.html

http://lists.opensuse.org/opensuse-security-announce/2016-10/msg00012.html

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

http://lists.opensuse.org/opensuse-security-announce/2016-10/msg00021.html

http://lists.opensuse.org/opensuse-security-announce/2016-10/msg00029.html

http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00010.html

http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00011.html

http://lists.opensuse.org/opensuse-security-announce/2018-02/msg00032.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://seclists.org/fulldisclosure/2017/Jul/31

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160927-openssl

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

http://www.debian.org/security/2016/dsa-3673

http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20170322-01-openssl-en

http://www.openwall.com/lists/oss-security/2016/06/08/10

http://www.openwall.com/lists/oss-security/2016/06/08/11

http://www.openwall.com/lists/oss-security/2016/06/08/12

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

http://www.openwall.com/lists/oss-security/2016/06/08/4

http://www.openwall.com/lists/oss-security/2016/06/08/5

http://www.openwall.com/lists/oss-security/2016/06/08/6

http://www.openwall.com/lists/oss-security/2016/06/08/7

http://www.openwall.com/lists/oss-security/2016/06/08/8

http://www.openwall.com/lists/oss-security/2016/06/09/2

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.ubuntu.com/usn/USN-3087-1

http://www.ubuntu.com/usn/USN-3087-2

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://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf

https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=399944622df7bd81af62e67ea967c470534090e2

https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-c05302448

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://kc.mcafee.com/corporate/index?page=content&id=SB10215

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.f5.com/csp/article/K53084033

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

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

https://www.arista.com/en/support/advisories-notices/security-advisories/1749-security-advisory-24

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

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

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

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

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

http://lists.opensuse.org/opensuse-security-announce/2016-09/msg00022.html

http://lists.opensuse.org/opensuse-security-announce/2016-09/msg00023.html

http://lists.opensuse.org/opensuse-security-announce/2016-09/msg00024.html

http://lists.opensuse.org/opensuse-security-announce/2016-09/msg00031.html

http://lists.opensuse.org/opensuse-security-announce/2016-10/msg00005.html

http://lists.opensuse.org/opensuse-security-announce/2016-10/msg00011.html

http://lists.opensuse.org/opensuse-security-announce/2016-10/msg00012.html

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

http://lists.opensuse.org/opensuse-security-announce/2016-10/msg00021.html

http://lists.opensuse.org/opensuse-security-announce/2016-10/msg00029.html

http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00010.html

http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00011.html

http://lists.opensuse.org/opensuse-security-announce/2018-02/msg00032.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://seclists.org/fulldisclosure/2017/Jul/31

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160927-openssl

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

http://www.debian.org/security/2016/dsa-3673

http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20170322-01-openssl-en

http://www.openwall.com/lists/oss-security/2016/06/08/10

http://www.openwall.com/lists/oss-security/2016/06/08/11

http://www.openwall.com/lists/oss-security/2016/06/08/12

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

http://www.openwall.com/lists/oss-security/2016/06/08/4

http://www.openwall.com/lists/oss-security/2016/06/08/5

http://www.openwall.com/lists/oss-security/2016/06/08/6

http://www.openwall.com/lists/oss-security/2016/06/08/7

http://www.openwall.com/lists/oss-security/2016/06/08/8

http://www.openwall.com/lists/oss-security/2016/06/09/2

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.ubuntu.com/usn/USN-3087-1

http://www.ubuntu.com/usn/USN-3087-2

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://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf

https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=399944622df7bd81af62e67ea967c470534090e2

https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-c05302448

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://kc.mcafee.com/corporate/index?page=content&id=SB10215

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.f5.com/csp/article/K53084033

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

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

https://www.arista.com/en/support/advisories-notices/security-advisories/1749-security-advisory-24

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

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

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

Common Vulnerability Scoring System

Attack Vector

Network

Adjacent

Local

Physical

Privileges Required

None

Low

High

User Interaction

None

Required

Scope

Unchanged

Changed

Confidentiality

None

Low

High

Integrity

None

Low

High

Availability

None

Low

High