Timing attack against DSA
Published Oct 30, 2018
5.9
MEDIUMCVSS 3.1
EPSS 12.15%
Description
The OpenSSL DSA signature algorithm has been shown to be vulnerable to a timing side channel attack. An attacker could use variations in the signing algorithm to recover the private key. Fixed in OpenSSL 1.1.1a (Affected 1.1.1). Fixed in OpenSSL 1.1.0j (Affected 1.1.0-1.1.0i). Fixed in OpenSSL 1.0.2q (Affected 1.0.2-1.0.2p).
Affected products
-
- Version Fixed in OpenSSL 1.0.2q (Affected 1.0.2-1.0.2p)StatusaffectedConstraints-
- Version Fixed in OpenSSL 1.1.0j (Affected 1.1.0-1.1.0i)StatusaffectedConstraints-
- Version Fixed in OpenSSL 1.1.1a (Affected 1.1.1)StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
Configuration 1
Configuration 2
- 14.04
- 16.04
- 18.04
- 18.10
Configuration 3
- 9.0
Configuration 4
- ≥ 6.0.0 · ≤ 6.8.1
- ≥ 6.9.0 · < 6.15.0
- ≥ 8.0.0 · ≤ 8.8.1
- ≥ 8.9.0 · < 8.14.0
- ≥ 10.0.0 · ≤ 10.12.0
- ≥ 11.0.0 · < 11.3.0
- 10.13.0
Configuration 5
- n/a
Configuration 6
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
Configuration 7
- 11.1.2.4.0
- 0.9.8
- 1.0.0
- 1.0.1
- 12.1.0.5.0
- 13.2.0.0.0
- 13.3.0.0.0
- 12.3.3
- ≥ 3.0 · ≤ 3.12.3
- ≥ 4.0 · ≤ 4.1.2
- 8.55
- 8.56
- 8.57
- ≥ 17.7 · ≤ 17.12
- 8.4
- 15.1
- 15.2
- 16.1
- 16.2
- 18.8
- 12.1.1.0.0
No data.
JBoss Core Services on RHEL 6
jbcs-httpd24-apr-0:1.6.3-63.jbcs.el6
Fixed · RHSA-2019:3932
JBoss Core Services on RHEL 6
jbcs-httpd24-apr-util-0:1.6.1-48.jbcs.el6
Fixed · RHSA-2019:3932
JBoss Core Services on RHEL 6
jbcs-httpd24-brotli-0:1.0.6-7.jbcs.el6
Fixed · RHSA-2019:3932
JBoss Core Services on RHEL 6
jbcs-httpd24-curl-0:7.64.1-14.jbcs.el6
Fixed · RHSA-2019:3932
JBoss Core Services on RHEL 6
jbcs-httpd24-httpd-0:2.4.37-33.jbcs.el6
Fixed · RHSA-2019:3932
JBoss Core Services on RHEL 6
jbcs-httpd24-jansson-0:2.11-20.jbcs.el6
Fixed · RHSA-2019:3932
JBoss Core Services on RHEL 6
jbcs-httpd24-mod_cluster-native-0:1.3.12-9.Final_redhat_2.jbcs.el6
Fixed · RHSA-2019:3932
JBoss Core Services on RHEL 6
jbcs-httpd24-mod_jk-0:1.2.46-22.redhat_1.jbcs.el6
Fixed · RHSA-2019:3932
JBoss Core Services on RHEL 6
jbcs-httpd24-mod_security-0:2.9.2-16.GA.jbcs.el6
Fixed · RHSA-2019:3932
JBoss Core Services on RHEL 6
jbcs-httpd24-nghttp2-0:1.39.2-4.jbcs.el6
Fixed · RHSA-2019:3932
JBoss Core Services on RHEL 6
jbcs-httpd24-openssl-1:1.1.1-25.jbcs.el6
Fixed · RHSA-2019:3932
JBoss Core Services on RHEL 7
jbcs-httpd24-apr-0:1.6.3-63.jbcs.el7
Fixed · RHSA-2019:3933
JBoss Core Services on RHEL 7
jbcs-httpd24-apr-util-0:1.6.1-48.jbcs.el7
Fixed · RHSA-2019:3933
JBoss Core Services on RHEL 7
jbcs-httpd24-brotli-0:1.0.6-7.jbcs.el7
Fixed · RHSA-2019:3933
JBoss Core Services on RHEL 7
jbcs-httpd24-curl-0:7.64.1-14.jbcs.el7
Fixed · RHSA-2019:3933
JBoss Core Services on RHEL 7
jbcs-httpd24-httpd-0:2.4.37-33.jbcs.el7
Fixed · RHSA-2019:3933
JBoss Core Services on RHEL 7
jbcs-httpd24-jansson-0:2.11-20.jbcs.el7
Fixed · RHSA-2019:3933
JBoss Core Services on RHEL 7
jbcs-httpd24-mod_cluster-native-0:1.3.12-9.Final_redhat_2.jbcs.el7
Fixed · RHSA-2019:3933
JBoss Core Services on RHEL 7
jbcs-httpd24-mod_jk-0:1.2.46-22.redhat_1.jbcs.el7
Fixed · RHSA-2019:3933
JBoss Core Services on RHEL 7
jbcs-httpd24-mod_security-0:2.9.2-16.GA.jbcs.el7
Fixed · RHSA-2019:3933
JBoss Core Services on RHEL 7
jbcs-httpd24-nghttp2-0:1.39.2-4.jbcs.el7
Fixed · RHSA-2019:3933
JBoss Core Services on RHEL 7
jbcs-httpd24-openssl-1:1.1.1-25.jbcs.el7
Fixed · RHSA-2019:3933
Red Hat Ansible Tower 3.4 for RHEL 7
ansible-tower-34/ansible-tower-memcached:1.4.15-28
Fixed · RHBA-2020:0547
Red Hat Ansible Tower 3.4 for RHEL 7
ansible-tower-35/ansible-tower-memcached:1.4.15-28
Fixed · RHBA-2020:0547
Red Hat Ansible Tower 3.4 for RHEL 7
ansible-tower-37/ansible-tower-memcached-rhel7:1.4.15-28
Fixed · RHBA-2020:0547
Red Hat Enterprise Linux 7
openssl-1:1.0.2k-19.el7
Fixed · RHSA-2019:2304
Red Hat Enterprise Linux 8
openssl-1:1.1.1c-2.el8
Fixed · RHSA-2019:3700
Red Hat JBoss Core Services
openssl
Fixed · RHSA-2019:3935
Red Hat Enterprise Linux 6
openssl
Will not fix
Red Hat Enterprise Linux 6
openssl098e
Will not fix
Red Hat Enterprise Linux 7
OVMF
Will not fix
Red Hat Enterprise Linux 7
openssl098e
Will not fix
Red Hat Enterprise Linux 8
compat-openssl10
Will not fix
Red Hat Enterprise Linux 8
mingw-openssl
Fix deferred
Red Hat JBoss Enterprise Application Platform 6
openssl
Fix deferred
Red Hat JBoss Enterprise Web Server 2
openssl
Will not fix
Red Hat JBoss Web Server 3
openssl
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| JBoss Core Services on RHEL 6 | jbcs-httpd24-apr-0:1.6.3-63.jbcs.el6 | Fixed | RHSA-2019:3932 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-apr-util-0:1.6.1-48.jbcs.el6 | Fixed | RHSA-2019:3932 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-brotli-0:1.0.6-7.jbcs.el6 | Fixed | RHSA-2019:3932 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-curl-0:7.64.1-14.jbcs.el6 | Fixed | RHSA-2019:3932 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-httpd-0:2.4.37-33.jbcs.el6 | Fixed | RHSA-2019:3932 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-jansson-0:2.11-20.jbcs.el6 | Fixed | RHSA-2019:3932 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-mod_cluster-native-0:1.3.12-9.Final_redhat_2.jbcs.el6 | Fixed | RHSA-2019:3932 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-mod_jk-0:1.2.46-22.redhat_1.jbcs.el6 | Fixed | RHSA-2019:3932 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-mod_security-0:2.9.2-16.GA.jbcs.el6 | Fixed | RHSA-2019:3932 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-nghttp2-0:1.39.2-4.jbcs.el6 | Fixed | RHSA-2019:3932 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-openssl-1:1.1.1-25.jbcs.el6 | Fixed | RHSA-2019:3932 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-apr-0:1.6.3-63.jbcs.el7 | Fixed | RHSA-2019:3933 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-apr-util-0:1.6.1-48.jbcs.el7 | Fixed | RHSA-2019:3933 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-brotli-0:1.0.6-7.jbcs.el7 | Fixed | RHSA-2019:3933 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-curl-0:7.64.1-14.jbcs.el7 | Fixed | RHSA-2019:3933 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-httpd-0:2.4.37-33.jbcs.el7 | Fixed | RHSA-2019:3933 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-jansson-0:2.11-20.jbcs.el7 | Fixed | RHSA-2019:3933 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-mod_cluster-native-0:1.3.12-9.Final_redhat_2.jbcs.el7 | Fixed | RHSA-2019:3933 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-mod_jk-0:1.2.46-22.redhat_1.jbcs.el7 | Fixed | RHSA-2019:3933 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-mod_security-0:2.9.2-16.GA.jbcs.el7 | Fixed | RHSA-2019:3933 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-nghttp2-0:1.39.2-4.jbcs.el7 | Fixed | RHSA-2019:3933 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-openssl-1:1.1.1-25.jbcs.el7 | Fixed | RHSA-2019:3933 |
| Red Hat Ansible Tower 3.4 for RHEL 7 | ansible-tower-34/ansible-tower-memcached:1.4.15-28 | Fixed | RHBA-2020:0547 |
| Red Hat Ansible Tower 3.4 for RHEL 7 | ansible-tower-35/ansible-tower-memcached:1.4.15-28 | Fixed | RHBA-2020:0547 |
| Red Hat Ansible Tower 3.4 for RHEL 7 | ansible-tower-37/ansible-tower-memcached-rhel7:1.4.15-28 | Fixed | RHBA-2020:0547 |
| Red Hat Enterprise Linux 7 | openssl-1:1.0.2k-19.el7 | Fixed | RHSA-2019:2304 |
| Red Hat Enterprise Linux 8 | openssl-1:1.1.1c-2.el8 | Fixed | RHSA-2019:3700 |
| Red Hat JBoss Core Services | openssl | Fixed | RHSA-2019:3935 |
| Red Hat Enterprise Linux 6 | openssl | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | openssl098e | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | OVMF | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | openssl098e | Will not fix | n/a |
| Red Hat Enterprise Linux 8 | compat-openssl10 | Will not fix | n/a |
| Red Hat Enterprise Linux 8 | mingw-openssl | Fix deferred | n/a |
| Red Hat JBoss Enterprise Application Platform 6 | openssl | Fix deferred | n/a |
| Red Hat JBoss Enterprise Web Server 2 | openssl | Will not fix | n/a |
| Red Hat JBoss Web Server 3 | openssl | Affected | 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:N/AC:H/PR:N/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:N/AC:M/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
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (45 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 12.15% (0.12154) | 96.04th | v5 (v2026.06.15) |
| Jun 15, 2026 | 12.15% (0.12154) | 95.62th | v5 (v2026.06.15) |
| Mar 4, 2026 | 6.05% (0.06051) | 90.56th | v4 (v2025.03.14) |
| Mar 1, 2026 | 3.47% (0.03469) | 87.36th | v4 (v2025.03.14) |
| Feb 4, 2026 | 6.05% (0.06051) | 90.50th | v4 (v2025.03.14) |
| Feb 1, 2026 | 3.47% (0.03469) | 87.29th | v4 (v2025.03.14) |
| Jan 4, 2026 | 6.05% (0.06051) | 90.43th | v4 (v2025.03.14) |
| Jan 1, 2026 | 3.47% (0.03469) | 87.25th | v4 (v2025.03.14) |
| Dec 28, 2025 | 6.05% (0.06051) | 90.42th | v4 (v2025.03.14) |
| Dec 27, 2025 | 4.15% (0.04151) | 88.36th | v4 (v2025.03.14) |
| Dec 4, 2025 | 6.05% (0.06051) | 90.35th | v4 (v2025.03.14) |
| Dec 1, 2025 | 3.47% (0.03469) | 87.18th | v4 (v2025.03.14) |
| Nov 21, 2025 | 6.05% (0.06051) | 90.33th | v4 (v2025.03.14) |
| Nov 18, 2025 | 2.71% (0.02711) | 84.62th | v4 (v2025.03.14) |
| Nov 4, 2025 | 6.05% (0.06051) | 90.31th | v4 (v2025.03.14) |
| Nov 1, 2025 | 3.47% (0.03469) | 87.10th | v4 (v2025.03.14) |
| Oct 28, 2025 | 6.05% (0.06051) | 90.31th | v4 (v2025.03.14) |
| Oct 27, 2025 | 4.15% (0.04151) | 88.19th | v4 (v2025.03.14) |
| Oct 4, 2025 | 6.05% (0.06051) | 90.35th | v4 (v2025.03.14) |
| Sep 4, 2025 | 4.15% (0.04151) | 88.22th | v4 (v2025.03.14) |
| Sep 1, 2025 | 2.12% (0.02117) | 83.52th | v4 (v2025.03.14) |
| Aug 4, 2025 | 4.15% (0.04151) | 88.23th | v4 (v2025.03.14) |
| Aug 1, 2025 | 2.12% (0.02117) | 83.50th | v4 (v2025.03.14) |
| Jul 30, 2025 | 4.15% (0.04151) | 88.22th | v4 (v2025.03.14) |
| Jul 4, 2025 | 6.05% (0.06051) | 90.30th | v4 (v2025.03.14) |
| Jul 1, 2025 | 3.47% (0.03469) | 87.11th | v4 (v2025.03.14) |
| Jun 4, 2025 | 6.05% (0.06051) | 90.25th | v4 (v2025.03.14) |
| Jun 1, 2025 | 3.47% (0.03469) | 87.03th | v4 (v2025.03.14) |
| May 4, 2025 | 6.05% (0.06051) | 90.20th | v4 (v2025.03.14) |
| May 1, 2025 | 3.47% (0.03469) | 86.94th | v4 (v2025.03.14) |
| Mar 29, 2025 | 6.57% (0.06572) | 84.84th | v4 (v2025.03.14) |
| Mar 17, 2025 | 5.27% (0.05268) | 89.28th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.34% (0.00342) | 72.35th | v3 (v2023.03.01) |
| May 1, 2024 | 0.34% (0.00342) | 71.20th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.29% (0.00291) | 68.18th | v3 (v2023.03.01) |
| Oct 24, 2023 | 0.29% (0.00291) | 65.53th | v3 (v2023.03.01) |
| Jul 8, 2023 | 0.28% (0.00280) | 64.01th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.41% (0.00412) | 69.90th | v3 (v2023.03.01) |
| Mar 6, 2023 | 4.72% (0.04720) | 89.23th | v2 (v2022.01.01) |
| Apr 1, 2022 | 4.72% (0.04720) | 88.14th | v2 (v2022.01.01) |
| Feb 4, 2022 | 4.72% (0.04720) | 74.52th | v2 (v2022.01.01) |
| Feb 3, 2022 | 6.00% (0.06005) | 81.36th | v1 |
| Jan 6, 2022 | 6.00% (0.06005) | 81.16th | v1 |
| Sep 1, 2021 | 6.00% (0.06005) | 89.55th | v1 |
| Apr 14, 2021 | 6.00% (0.06005) | 0.00th | v1 |
References (33)
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00030.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00056.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://www.securityfocus.com/bid/105758 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2019:2304 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3700 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3932 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3933 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3935 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2018-0734 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1644364 Issue Tracking
- https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=43e6a58d4991a451daf4891ff05a48735df871ac x_refsource_CONFIRM
- https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=8abfe72e8c1de1b95f50aa0d9134803b4d00070f x_refsource_CONFIRM
- https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=ef11e19d1365eea2b1851e6f540a0bf365d303e7 x_refsource_CONFIRM
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EWC42UXL5GHTU5G77VKBF6JYUUNGSHOM/ vendor-advisoryx_refsource_FEDORA
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y3IVFGSERAZLNJCK35TEM2R4726XIH3Z/ vendor-advisoryx_refsource_FEDORA
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZBEV5QGDRFUZDMNECFXUSN5FMYOZDE4V/ vendor-advisoryx_refsource_FEDORA
- https://nodejs.org/en/blog/vulnerability/november-2018-security-releases/ x_refsource_CONFIRMThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-0734
- https://security.netapp.com/advisory/ntap-20181105-0002/ x_refsource_CONFIRMThird Party Advisory
- https://security.netapp.com/advisory/ntap-20190118-0002/ x_refsource_CONFIRMThird Party Advisory
- https://security.netapp.com/advisory/ntap-20190423-0002/ x_refsource_CONFIRMThird Party Advisory
- https://usn.ubuntu.com/3840-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2018-0734
- https://www.debian.org/security/2018/dsa-4348 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- https://www.debian.org/security/2018/dsa-4355 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- https://www.openssl.org/news/secadv/20181030.txt x_refsource_CONFIRMVendor Advisory
- https://www.oracle.com/security-alerts/cpuapr2020.html x_refsource_MISCThird Party Advisory
- https://www.oracle.com/security-alerts/cpujan2020.html x_refsource_MISCThird Party Advisory
- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html x_refsource_MISCPatchThird Party Advisory
- https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html x_refsource_CONFIRMPatchThird Party Advisory
- https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html x_refsource_MISCPatchThird Party Advisory
- https://www.tenable.com/security/tns-2018-16 x_refsource_CONFIRMThird Party Advisory
- https://www.tenable.com/security/tns-2018-17 x_refsource_CONFIRMThird Party Advisory
Change history (0)
No recorded changes yet.