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CVE-2016-2178

21
FAUCET Score

CVE-2016-2178 is a timing side-channel vulnerability in the dsa_sign_setup function of OpenSSL versions through 1.0.2h, affecting products like Canonical, Debian, Node.js, Oracle, and SUSE. This flaw allows local attackers to potentially discover a DSA private key due to non-constant time operations. Rated Medium severity (CVSS 5.5), it requires local access and has a high confidentiality impact. There is no evidence of active exploitation, nor are there publicly available exploit modules in Metasploit, Nuclei, or ExploitDB, though it has received some community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
1.0.1CPE matchmatch criteria
cpe:2.3:a:openssl:openssl:1.0.1:*:*:*:*:*:*:*
1.0.1aCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:1.0.1a:*:*:*:*:*:*:*
1.0.1bCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:1.0.1b:*:*:*:*:*:*:*
1.0.1cCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:1.0.1c:*:*:*:*:*:*:*
1.0.1dCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:1.0.1d:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.17%
Probability of exploitation in next 30 days
EPSS Percentile
64.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0117 is in the 97th percentile among its peer group of 15,937 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (33)

oraclepatch availablevia nvd_reference
View patch
redhatpatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: JBoss Core Services on RHEL 6Fixed in: jbcs-httpd24-httpd-0:2.4.23-102.jbcs.el6
View patch
redhatpatch availablevia redhat_api
Product: JBoss Core Services on RHEL 6Fixed in: jbcs-httpd24-mod_auth_kerb-0:5.4-35.jbcs.el6
View patch
redhatpatch availablevia redhat_api
Product: JBoss Core Services on RHEL 6Fixed in: jbcs-httpd24-mod_bmx-0:0.9.6-14.GA.jbcs.el6
View patch
redhatpatch availablevia redhat_api
Product: JBoss Core Services on RHEL 6Fixed in: jbcs-httpd24-mod_cluster-native-0:1.3.5-13.Final_redhat_1.jbcs.el6
View patch
redhatpatch availablevia redhat_api
Product: JBoss Core Services on RHEL 6Fixed in: jbcs-httpd24-mod_jk-0:1.2.41-14.redhat_1.jbcs.el6
View patch
redhatpatch availablevia redhat_api
Product: JBoss Core Services on RHEL 6Fixed in: jbcs-httpd24-mod_rt-0:2.4.1-16.GA.jbcs.el6
View patch
redhatpatch availablevia redhat_api
Product: JBoss Core Services on RHEL 6Fixed in: jbcs-httpd24-mod_security-0:2.9.1-18.GA.jbcs.el6
View patch
redhatpatch availablevia redhat_api
Product: JBoss Core Services on RHEL 6Fixed in: jbcs-httpd24-nghttp2-0:1.12.0-9.jbcs.el6
View patch
redhatpatch availablevia redhat_api
Product: JBoss Core Services on RHEL 6Fixed in: jbcs-httpd24-openssl-1:1.0.2h-12.jbcs.el6
View patch
redhatpatch availablevia redhat_api
Product: JBoss Core Services on RHEL 7Fixed in: jbcs-httpd24-httpd-0:2.4.23-102.jbcs.el7
View patch
redhatpatch availablevia redhat_api
Product: JBoss Core Services on RHEL 7Fixed in: jbcs-httpd24-mod_auth_kerb-0:5.4-35.jbcs.el7
View patch
redhatpatch availablevia redhat_api
Product: JBoss Core Services on RHEL 7Fixed in: jbcs-httpd24-mod_bmx-0:0.9.6-14.GA.jbcs.el7
View patch
redhatpatch availablevia redhat_api
Product: JBoss Core Services on RHEL 7Fixed in: jbcs-httpd24-mod_cluster-native-0:1.3.5-13.Final_redhat_1.jbcs.el7
View patch
redhatpatch availablevia redhat_api
Product: JBoss Core Services on RHEL 7Fixed in: jbcs-httpd24-mod_jk-0:1.2.41-14.redhat_1.jbcs.el7
View patch
redhatpatch availablevia redhat_api
Product: JBoss Core Services on RHEL 7Fixed in: jbcs-httpd24-mod_security-0:2.9.1-18.GA.jbcs.el7
View patch
redhatpatch availablevia redhat_api
Product: JBoss Core Services on RHEL 7Fixed in: jbcs-httpd24-nghttp2-0:1.12.0-9.jbcs.el7
View patch
redhatpatch availablevia redhat_api
Product: JBoss Core Services on RHEL 7Fixed in: jbcs-httpd24-openssl-1:1.0.2h-12.jbcs.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: openssl-0:1.0.1e-48.el6_8.3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: openssl-1:1.0.1e-51.el7_2.7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Enterprise Application Platform 6.4Fixed in: openssl
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 6Fixed in: jbcs-httpd24-openssl-1:1.0.2h-13.jbcs.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 7Fixed in: jbcs-httpd24-openssl-1:1.0.2h-13.jbcs.el7
View patch
redhatpatch availablevia redhat_api
Product: Text-Only JBCS
View patch
redhatpatch availablevia redhat_api
Product: JBoss Core Services on RHEL 7Fixed in: jbcs-httpd24-mod_rt-0:2.4.1-16.GA.jbcs.el7
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat JBoss Enterprise Web Server 3Fixed in: openssl
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: openssl097a
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: openssl098e
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: openssl
redhatend of lifevia redhat_api
Product: Red Hat JBoss Enterprise Web Server 1Fixed in: openssl
redhatend of lifevia redhat_api
Product: Red Hat JBoss Enterprise Web Server 2Fixed in: openssl
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: openssl098e

Vendor Advisories (1)

redhatCVE-2016-2178Moderate

openssl: Non-constant time codepath followed for certain operations in DSA implementation

May 23, 2016

References

eprint.iacr.org / 2016/594.pdf
Technical DescriptionThird Party Advisory
kb.juniper.net / InfoCenter/index
Third Party Advisory
lists.opensuse.org / opensuse-security-announce/2016-09/msg00022.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2016-09/msg00023.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2016-09/msg00024.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2016-09/msg00031.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2016-10/msg00005.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2016-10/msg00011.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2016-10/msg00012.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2016-10/msg00013.html
Third Party Advisory
lists.opensuse.org / opensuse-security-announce/2016-10/msg00021.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2016-10/msg00029.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2017-10/msg00010.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2017-10/msg00011.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2018-02/msg00032.html
Mailing ListThird Party Advisory
rhn.redhat.com / errata/RHSA-2016-1940.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2016-2957.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2017-1659.html
Third Party Advisory
access.redhat.com / errata/RHSA-2017:0193
Third Party Advisory
access.redhat.com / errata/RHSA-2017:0194
Third Party Advisory
access.redhat.com / errata/RHSA-2017:1658
Third Party Advisory
bto.bluecoat.com / security-advisory/sa132
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatch
cert-portal.siemens.com / productcert/pdf/ssa-412672.pdf
seclists.org / fulldisclosure/2017/Jul/31
Mailing ListThird Party Advisory
git.openssl.org
h20566.www2.hpe.com / hpsc/doc/public/display
Third Party Advisory
h20566.www2.hpe.com / portal/site/hpsc/public/kb/docDisplay
Third Party Advisory
kb.pulsesecure.net / articles/Pulse_Security_Advisories/SA40312
Third Party Advisory
kc.mcafee.com / corporate/index
Third Party Advisory
nodejs.org / en/blog/vulnerability/september-2016-security-releases
Third Party Advisory
security.freebsd.org / advisories/FreeBSD-SA-16:26.openssl.asc
Third Party Advisory
security.gentoo.org / glsa/201612-16
Third Party AdvisoryVDB Entry
support.f5.com / csp/article/K53084033
Third Party Advisory
support.hpe.com / hpsc/doc/public/display
Third Party Advisory
support.hpe.com / hpsc/doc/public/display
Third Party Advisory
arista.com / en/support/advisories-notices/security-advisories/1749-security-advisory-24
Third Party Advisory
tenable.com / security/tns-2016-16
Third Party Advisory
tenable.com / security/tns-2016-20
Third Party Advisory
tenable.com / security/tns-2016-21
Third Party Advisory
tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-20160927-openssl
Third Party Advisory
www-01.ibm.com / support/docview.wss
Third Party Advisory
debian.org / security/2016/dsa-3673
Third Party Advisory
huawei.com / en/psirt/security-advisories/huawei-sa-20170322-01-openssl-en
Third Party Advisory
openwall.com / lists/oss-security/2016/06/08/10
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2016/06/08/11
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2016/06/08/12
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2016/06/08/2
Mailing ListPatchThird Party Advisory
openwall.com / lists/oss-security/2016/06/08/4
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2016/06/08/5
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2016/06/08/6
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2016/06/08/7
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2016/06/08/8
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2016/06/09/2
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2016/06/09/8
Mailing ListThird Party Advisory
oracle.com / technetwork/security-advisory/cpuapr2018-3678067.html
PatchThird Party Advisory
oracle.com / technetwork/security-advisory/cpujan2018-3236628.html
PatchThird Party Advisory
oracle.com / technetwork/security-advisory/cpujul2017-3236622.html
PatchThird Party Advisory
oracle.com / technetwork/security-advisory/cpuoct2016-2881722.html
PatchThird Party Advisory
oracle.com / technetwork/security-advisory/cpuoct2017-3236626.html
PatchThird Party Advisory
oracle.com / technetwork/topics/security/bulletinapr2016-2952098.html
Third Party Advisory
oracle.com / technetwork/topics/security/linuxbulletinoct2016-3090545.html
Third Party Advisory
oracle.com / technetwork/topics/security/ovmbulletinoct2016-3090547.html
Third Party Advisory
securityfocus.com / bid/91081
Third Party AdvisoryVDB Entry
securitytracker.com / id/1036054
Third Party AdvisoryVDB Entry
splunk.com / view/SP-CAAAPSV
Third Party Advisory
splunk.com / view/SP-CAAAPUE
Third Party Advisory
ubuntu.com / usn/USN-3087-1
Third Party Advisory
ubuntu.com / usn/USN-3087-2
Third Party Advisory