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Fencer Vulns
medium 5.5

CVE-2016-2178 json

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…

published 2016-06-20 10 y ago modified 2026-06-17 4 mo ago also EUVD-2016-3263

cvss
5.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.2%
EPSS 1.2% chance of exploitation in 30 days, percentile 69%
public exploits
0
none known

Summary

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.

Patch / fix

  • nodejs node.js 0.10.47, 0.12.16, 4.6.0, 6.7.0
  • openssl Debian 14, Debian 13, Debian 12 1.0.2i-1

debian advisories DEBIAN-CVE-2016-2178

  • openssl Ubuntu 14.04 LTS 1.0.1f-1ubuntu2.20
  • openssl Ubuntu 16.04 LTS 1.0.2g-1ubuntu4.4

ubuntu advisories UBUNTU-CVE-2016-2178

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • openssl RHEL 6 1.0.1e-48.el6_8.3
  • openssl RHEL 7 1:1.0.1e-51.el7_2.7
  • openssl-libs RHEL 7 1:1.0.1e-51.el7_2.7
  • openssl-perl RHEL 6 1.0.1e-48.el6_8.3
  • openssl-perl RHEL 7 1:1.0.1e-51.el7_2.7
  • jbcs-httpd24-httpd jboss core services 1 2.4.23-102.jbcs.el7
  • jbcs-httpd24-mod_jk jboss core services 1 1.2.41-14.redhat_1.jbcs.el7
  • jbcs-httpd24-mod_rt jboss core services 1 2.4.1-16.GA.jbcs.el7

red hat advisories RHSA-2016:1940RHSA-2017:0194RHSA-2017:0193RHSA-2017:1658

  • compat-openssl098 SLES for SAP 12 SP1, SLED 12 SP1, SLE Module for Legacy 12 0.9.8j-102.1
  • openssl1 SLES 11-SECURITY 1.0.1g-0.52.1
  • nodejs4 SLE Module for Web and Scripting 12 4.6.0-8.1
  • openssl Studio Onsite 1.3, SLES for SAP 11 SP4, SLES 11 SP4 +8 more 0.9.8j-0.102.2
  • openssl SLES for SAP 12 SP1, SLES 12 SP1, SLED 12 SP1 +1 more 1.0.1i-52.1
  • firefox-atk SLES 11 SP4-LTSS 2.26.1-2.8.4
  • mozilla-nss SLES 11 SP4-LTSS 3.45-38.9.3
  • firefox-gtk3 SLES 11 SP4-LTSS 3.10.9-2.15.3

suse advisories SUSE-SU-2019:14246-1SUSE-SU-2016:2468-1SUSE-SU-2016:2469-1SUSE-SU-2016:2470-1SUSE-SU-2016:2470-2SUSE-SU-2016:2458-1

  • openssl-1_1 openSUSE Tumbleweed 1.1.1l-1.2

opensuse advisories openSUSE-SU-2024:11127-1

  • openssl Alpine 3.8, Alpine 3.7, Alpine 3.6 +4 more 1.0.2h-r1

alpine advisories ALPINE-CVE-2016-2178

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • openssl Arch Linux 1.0.2.i-1
  • lib32-openssl Arch Linux 1:1.0.2.i-1

arch linux advisories AVG-29AVG-30

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2016-2178 updated cvss 5.1

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

  • Red Hat Enterprise Linux 5 openssl, openssl097a Red Hat Enterprise Linux 6 openssl098e Red Hat Enterprise Linux 7 openssl098e Red Hat JBoss Enterprise Web Server 1 openssl Red Hat JBoss Enterprise Web Server 2 openssl
    affected: no fix planned “Will not fix”
  • Red Hat JBoss Enterprise Web Server 3 openssl
    affected: no fix available “Fix deferred”
  • Red Hat Enterprise Linux Client (v. 7) openssl 1.0.1e-51.el7_2.7, openssl-libs 1.0.1e-51.el7_2.7 Red Hat Enterprise Linux Client Optional (v. 7) openssl-perl 1.0.1e-51.el7_2.7 Red Hat Enterprise Linux ComputeNode (v. 7) openssl 1.0.1e-51.el7_2.7, openssl-libs 1.0.1e-51.el7_2.7 Red Hat Enterprise Linux ComputeNode Optional (v. 7) openssl-perl 1.0.1e-51.el7_2.7 Red Hat Enterprise Linux Desktop (v. 6) openssl 1.0.1e-48.el6_8.3 Red Hat Enterprise Linux Desktop Optional (v. 6) openssl-perl 1.0.1e-48.el6_8.3
    +10 more products
    Red Hat Enterprise Linux HPC Node (v. 6) openssl 1.0.1e-48.el6_8.3 Red Hat Enterprise Linux HPC Node Optional (v. 6) openssl-perl 1.0.1e-48.el6_8.3 Red Hat Enterprise Linux Server (v. 6) openssl 1.0.1e-48.el6_8.3 Red Hat Enterprise Linux Server (v. 7) openssl 1.0.1e-51.el7_2.7, openssl-libs 1.0.1e-51.el7_2.7 Red Hat Enterprise Linux Server Optional (v. 6) openssl-perl 1.0.1e-48.el6_8.3 Red Hat Enterprise Linux Server Optional (v. 7) openssl-perl 1.0.1e-51.el7_2.7 Red Hat Enterprise Linux Workstation (v. 6) openssl 1.0.1e-48.el6_8.3 Red Hat Enterprise Linux Workstation (v. 7) openssl 1.0.1e-51.el7_2.7, openssl-libs 1.0.1e-51.el7_2.7 Red Hat Enterprise Linux Workstation Optional (v. 6) openssl-perl 1.0.1e-48.el6_8.3 Red Hat Enterprise Linux Workstation Optional (v. 7) openssl-perl 1.0.1e-51.el7_2.7
    fixed: vendor fix RHSA-2016:1940
  • Red Hat JBoss Core Services
    fixed: vendor fix RHSA-2016:2957
  • Red Hat JBoss Core Services on RHEL 6 Server jbcs-httpd24-httpd 2.4.23-102.jbcs.el6, jbcs-httpd24-nghttp2 1.12.0-9.jbcs.el6, jbcs-httpd24-openssl 1.0.2h-12.jbcs.el6, jbcs-httpd24-mod_rt 2.4.1-16.GA.jbcs.el6, jbcs-httpd24-mod_ssl 2.4.23-102.jbcs.el6, jbcs-httpd24-mod_bmx 0.9.6-14.GA.jbcs.el6, +21 more
    fixed: vendor fix RHSA-2017:0193
  • Red Hat JBoss Core Services on RHEL 7 Server jbcs-httpd24-httpd 2.4.23-102.jbcs.el7, jbcs-httpd24-nghttp2 1.12.0-9.jbcs.el7, jbcs-httpd24-openssl 1.0.2h-12.jbcs.el7, jbcs-httpd24-mod_rt 2.4.1-16.GA.jbcs.el7, jbcs-httpd24-mod_ssl 2.4.23-102.jbcs.el7, jbcs-httpd24-mod_bmx 0.9.6-14.GA.jbcs.el7, +19 more
    fixed: vendor fix RHSA-2017:0194
  • Red Hat JBoss Enterprise Application Platform 6.4
    fixed: vendor fix RHSA-2017:1659
  • Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 6 Server jbcs-httpd24-openssl 1.0.2h-13.jbcs.el6, jbcs-httpd24-openssl-libs 1.0.2h-13.jbcs.el6, jbcs-httpd24-openssl-perl 1.0.2h-13.jbcs.el6 Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 7 Server jbcs-httpd24-openssl 1.0.2h-13.jbcs.el7, jbcs-httpd24-openssl-libs 1.0.2h-13.jbcs.el7, jbcs-httpd24-openssl-perl 1.0.2h-13.jbcs.el7
    fixed: vendor fix RHSA-2017:1658

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

cisa ICSA-22-349-21 updated cvss 5.5

Siemens SCALANCE X-200RNA Switch Devices

  • Siemens SCALANCE X204RNA (HSR) (6GK5204-0BA00-2MB2) <V3.2.7 Siemens SCALANCE X204RNA (PRP) (6GK5204-0BA00-2KB2) <V3.2.7 Siemens SCALANCE X204RNA EEC (HSR) (6GK5204-0BS00-2NA3) <V3.2.7 Siemens SCALANCE X204RNA EEC (PRP) (6GK5204-0BS00-3LA3) <V3.2.7 Siemens SCALANCE X204RNA EEC (PRP/HSR) (6GK5204-0BS00-3PA3) <V3.2.7
    affected: fixed in V3.2.7, mitigation support.industry.siemens.com

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

Exploit prediction

1.24% chance of exploitation in the next 30 days, higher than 69% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 2.1 AV:L/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.