openssl: Non-constant time codepath followed for certain operations in DSA implementation
Published Jun 20, 2016
5.5
MEDIUMCVSS 3.1
EPSS 1.17%
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.
Affected products
No data.
Configuration 1
- 1.0.1
- 1.0.1a
- 1.0.1b
- 1.0.1c
- 1.0.1d
- 1.0.1e
- 1.0.1f
- 1.0.1g
- 1.0.1h
- 1.0.1i
- 1.0.1j
- 1.0.1k
- 1.0.1l
- 1.0.1m
- 1.0.1n
- 1.0.1o
- 1.0.1p
- 1.0.1q
- 1.0.1r
- 1.0.1s
- 1.0.1t
- 1.0.2
- 1.0.2a
- 1.0.2b
- 1.0.2c
- 1.0.2d
- 1.0.2e
- 1.0.2f
- 1.0.2g
- 1.0.2h
Configuration 2
Configuration 3
- 12.0
Configuration 4
Configuration 5
- 8.0
Configuration 6
- 12.04
- 14.04
- 16.04
No data.
JBoss Core Services on RHEL 6
jbcs-httpd24-httpd-0:2.4.23-102.jbcs.el6
Fixed · RHSA-2017:0193
JBoss Core Services on RHEL 6
jbcs-httpd24-mod_auth_kerb-0:5.4-35.jbcs.el6
Fixed · RHSA-2017:0193
JBoss Core Services on RHEL 6
jbcs-httpd24-mod_bmx-0:0.9.6-14.GA.jbcs.el6
Fixed · RHSA-2017:0193
JBoss Core Services on RHEL 6
jbcs-httpd24-mod_cluster-native-0:1.3.5-13.Final_redhat_1.jbcs.el6
Fixed · RHSA-2017:0193
JBoss Core Services on RHEL 6
jbcs-httpd24-mod_jk-0:1.2.41-14.redhat_1.jbcs.el6
Fixed · RHSA-2017:0193
JBoss Core Services on RHEL 6
jbcs-httpd24-mod_rt-0:2.4.1-16.GA.jbcs.el6
Fixed · RHSA-2017:0193
JBoss Core Services on RHEL 6
jbcs-httpd24-mod_security-0:2.9.1-18.GA.jbcs.el6
Fixed · RHSA-2017:0193
JBoss Core Services on RHEL 6
jbcs-httpd24-nghttp2-0:1.12.0-9.jbcs.el6
Fixed · RHSA-2017:0193
JBoss Core Services on RHEL 6
jbcs-httpd24-openssl-1:1.0.2h-12.jbcs.el6
Fixed · RHSA-2017:0193
JBoss Core Services on RHEL 7
jbcs-httpd24-httpd-0:2.4.23-102.jbcs.el7
Fixed · RHSA-2017:0194
JBoss Core Services on RHEL 7
jbcs-httpd24-mod_auth_kerb-0:5.4-35.jbcs.el7
Fixed · RHSA-2017:0194
JBoss Core Services on RHEL 7
jbcs-httpd24-mod_bmx-0:0.9.6-14.GA.jbcs.el7
Fixed · RHSA-2017:0194
JBoss Core Services on RHEL 7
jbcs-httpd24-mod_cluster-native-0:1.3.5-13.Final_redhat_1.jbcs.el7
Fixed · RHSA-2017:0194
JBoss Core Services on RHEL 7
jbcs-httpd24-mod_jk-0:1.2.41-14.redhat_1.jbcs.el7
Fixed · RHSA-2017:0194
JBoss Core Services on RHEL 7
jbcs-httpd24-mod_rt-0:2.4.1-16.GA.jbcs.el7
Fixed · RHSA-2017:0194
JBoss Core Services on RHEL 7
jbcs-httpd24-mod_security-0:2.9.1-18.GA.jbcs.el7
Fixed · RHSA-2017:0194
JBoss Core Services on RHEL 7
jbcs-httpd24-nghttp2-0:1.12.0-9.jbcs.el7
Fixed · RHSA-2017:0194
JBoss Core Services on RHEL 7
jbcs-httpd24-openssl-1:1.0.2h-12.jbcs.el7
Fixed · RHSA-2017:0194
Red Hat Enterprise Linux 6
openssl-0:1.0.1e-48.el6_8.3
Fixed · RHSA-2016:1940
Red Hat Enterprise Linux 7
openssl-1:1.0.1e-51.el7_2.7
Fixed · RHSA-2016:1940
Red Hat JBoss Core Services
n/a
Fixed · RHSA-2016:2957
Red Hat JBoss Enterprise Application Platform 6.4
openssl
Fixed · RHSA-2017:1659
Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 6
jbcs-httpd24-openssl-1:1.0.2h-13.jbcs.el6
Fixed · RHSA-2017:1658
Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 7
jbcs-httpd24-openssl-1:1.0.2h-13.jbcs.el7
Fixed · RHSA-2017:1658
Red Hat Enterprise Linux 5
openssl
Will not fix
Red Hat Enterprise Linux 5
openssl097a
Will not fix
Red Hat Enterprise Linux 6
openssl098e
Will not fix
Red Hat Enterprise Linux 7
openssl098e
Will not fix
Red Hat JBoss Enterprise Web Server 1
openssl
Will not fix
Red Hat JBoss Enterprise Web Server 2
openssl
Will not fix
Red Hat JBoss Enterprise Web Server 3
openssl
Fix deferred
| Product | Package | State | Advisory |
|---|---|---|---|
| JBoss Core Services on RHEL 6 | jbcs-httpd24-httpd-0:2.4.23-102.jbcs.el6 | Fixed | RHSA-2017:0193 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-mod_auth_kerb-0:5.4-35.jbcs.el6 | Fixed | RHSA-2017:0193 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-mod_bmx-0:0.9.6-14.GA.jbcs.el6 | Fixed | RHSA-2017:0193 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-mod_cluster-native-0:1.3.5-13.Final_redhat_1.jbcs.el6 | Fixed | RHSA-2017:0193 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-mod_jk-0:1.2.41-14.redhat_1.jbcs.el6 | Fixed | RHSA-2017:0193 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-mod_rt-0:2.4.1-16.GA.jbcs.el6 | Fixed | RHSA-2017:0193 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-mod_security-0:2.9.1-18.GA.jbcs.el6 | Fixed | RHSA-2017:0193 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-nghttp2-0:1.12.0-9.jbcs.el6 | Fixed | RHSA-2017:0193 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-openssl-1:1.0.2h-12.jbcs.el6 | Fixed | RHSA-2017:0193 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-httpd-0:2.4.23-102.jbcs.el7 | Fixed | RHSA-2017:0194 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-mod_auth_kerb-0:5.4-35.jbcs.el7 | Fixed | RHSA-2017:0194 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-mod_bmx-0:0.9.6-14.GA.jbcs.el7 | Fixed | RHSA-2017:0194 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-mod_cluster-native-0:1.3.5-13.Final_redhat_1.jbcs.el7 | Fixed | RHSA-2017:0194 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-mod_jk-0:1.2.41-14.redhat_1.jbcs.el7 | Fixed | RHSA-2017:0194 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-mod_rt-0:2.4.1-16.GA.jbcs.el7 | Fixed | RHSA-2017:0194 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-mod_security-0:2.9.1-18.GA.jbcs.el7 | Fixed | RHSA-2017:0194 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-nghttp2-0:1.12.0-9.jbcs.el7 | Fixed | RHSA-2017:0194 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-openssl-1:1.0.2h-12.jbcs.el7 | Fixed | RHSA-2017:0194 |
| Red Hat Enterprise Linux 6 | openssl-0:1.0.1e-48.el6_8.3 | Fixed | RHSA-2016:1940 |
| Red Hat Enterprise Linux 7 | openssl-1:1.0.1e-51.el7_2.7 | Fixed | RHSA-2016:1940 |
| Red Hat JBoss Core Services | n/a | Fixed | RHSA-2016:2957 |
| Red Hat JBoss Enterprise Application Platform 6.4 | openssl | Fixed | RHSA-2017:1659 |
| Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 6 | jbcs-httpd24-openssl-1:1.0.2h-13.jbcs.el6 | Fixed | RHSA-2017:1658 |
| Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 7 | jbcs-httpd24-openssl-1:1.0.2h-13.jbcs.el7 | Fixed | RHSA-2017:1658 |
| Red Hat Enterprise Linux 5 | openssl | Will not fix | n/a |
| Red Hat Enterprise Linux 5 | openssl097a | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | openssl098e | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | openssl098e | Will not fix | n/a |
| Red Hat JBoss Enterprise Web Server 1 | openssl | Will not fix | n/a |
| Red Hat JBoss Enterprise Web Server 2 | openssl | Will not fix | n/a |
| Red Hat JBoss Enterprise Web Server 3 | openssl | Fix deferred | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
AV:L/AC:L/Au:N/C:P/I:N/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.17% (0.01174) | 66.37th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.17% (0.01174) | 63.32th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.28% (0.00282) | 49.51th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.05% (0.00046) | 19.08th | v3 (v2023.03.01) |
| May 3, 2024 | 0.05% (0.00046) | 15.99th | v3 (v2023.03.01) |
| Nov 7, 2023 | 0.14% (0.00135) | 48.66th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.05% (0.00046) | 14.06th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.35% (0.03345) | 84.35th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.35% (0.03345) | 82.72th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.35% (0.03345) | 65.84th | v2 (v2022.01.01) |
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Change history (0)
No recorded changes yet.