CVE-2018-0734 (GCVE-0-2018-0734)
Vulnerability from cvelistv5
Published
2018-10-30 12:00
Modified
2026-10-08 21:13
Severity ?
CWE
  • Constant time issue
Summary
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).
References
https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html x_refsource_CONFIRM
https://usn.ubuntu.com/3840-1/ vendor-advisory, x_refsource_UBUNTU
https://www.debian.org/security/2018/dsa-4355 vendor-advisory, x_refsource_DEBIAN
https://security.netapp.com/advisory/ntap-20181105-0002/ x_refsource_CONFIRM
https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=8abfe72e8c1de1b95f50aa0d9134803b4d00070f x_refsource_CONFIRM
https://www.tenable.com/security/tns-2018-17 x_refsource_CONFIRM
https://nodejs.org/en/blog/vulnerability/november-2018-security-releases/ x_refsource_CONFIRM
https://www.tenable.com/security/tns-2018-16 x_refsource_CONFIRM
http://www.securityfocus.com/bid/105758 vdb-entry, x_refsource_BID
https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=ef11e19d1365eea2b1851e6f540a0bf365d303e7 x_refsource_CONFIRM
https://www.debian.org/security/2018/dsa-4348 vendor-advisory, x_refsource_DEBIAN
https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=43e6a58d4991a451daf4891ff05a48735df871ac x_refsource_CONFIRM
https://www.openssl.org/news/secadv/20181030.txt x_refsource_CONFIRM
https://security.netapp.com/advisory/ntap-20190118-0002/ x_refsource_CONFIRM
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html x_refsource_MISC
https://security.netapp.com/advisory/ntap-20190423-0002/ x_refsource_CONFIRM
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00030.html vendor-advisory, x_refsource_SUSE
https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html x_refsource_MISC
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00056.html vendor-advisory, x_refsource_SUSE
https://access.redhat.com/errata/RHSA-2019:2304 vendor-advisory, x_refsource_REDHAT
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EWC42UXL5GHTU5G77VKBF6JYUUNGSHOM/ vendor-advisory, x_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZBEV5QGDRFUZDMNECFXUSN5FMYOZDE4V/ vendor-advisory, x_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y3IVFGSERAZLNJCK35TEM2R4726XIH3Z/ vendor-advisory, x_refsource_FEDORA
https://access.redhat.com/errata/RHSA-2019:3700 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:3933 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:3935 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:3932 vendor-advisory, x_refsource_REDHAT
https://www.oracle.com/security-alerts/cpujan2020.html x_refsource_MISC
https://www.oracle.com/security-alerts/cpuapr2020.html x_refsource_MISC
Impacted products
Vendor Product Version
OpenSSL OpenSSL Version: Fixed in OpenSSL 1.1.1a (Affected 1.1.1)
Version: Fixed in OpenSSL 1.1.0j (Affected 1.1.0-1.1.0i)
Version: Fixed in OpenSSL 1.0.2q (Affected 1.0.2-1.0.2p)
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\"https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=43e6a58d4991a451daf4891ff05a48735df871ac\", \"refsource\": \"CONFIRM\"}, {\"url\": \"https://www.openssl.org/news/secadv/20181030.txt\", \"name\": \"https://www.openssl.org/news/secadv/20181030.txt\", \"refsource\": \"CONFIRM\"}, {\"url\": \"https://security.netapp.com/advisory/ntap-20190118-0002/\", \"name\": \"https://security.netapp.com/advisory/ntap-20190118-0002/\", \"refsource\": \"CONFIRM\"}, {\"url\": \"https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html\", \"name\": \"https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html\", \"refsource\": \"MISC\"}, {\"url\": \"https://security.netapp.com/advisory/ntap-20190423-0002/\", \"name\": \"https://security.netapp.com/advisory/ntap-20190423-0002/\", \"refsource\": \"CONFIRM\"}, {\"url\": \"http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00030.html\", \"name\": \"openSUSE-SU-2019:1547\", \"refsource\": \"SUSE\"}, {\"url\": \"https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html\", \"name\": \"https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html\", \"refsource\": \"MISC\"}, {\"url\": \"http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00056.html\", \"name\": \"openSUSE-SU-2019:1814\", \"refsource\": \"SUSE\"}, {\"url\": \"https://access.redhat.com/errata/RHSA-2019:2304\", \"name\": \"RHSA-2019:2304\", \"refsource\": \"REDHAT\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EWC42UXL5GHTU5G77VKBF6JYUUNGSHOM/\", \"name\": \"FEDORA-2019-db06efdea1\", \"refsource\": \"FEDORA\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZBEV5QGDRFUZDMNECFXUSN5FMYOZDE4V/\", \"name\": \"FEDORA-2019-00c25b9379\", \"refsource\": \"FEDORA\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Y3IVFGSERAZLNJCK35TEM2R4726XIH3Z/\", \"name\": \"FEDORA-2019-9a0a7c0986\", \"refsource\": \"FEDORA\"}, {\"url\": \"https://access.redhat.com/errata/RHSA-2019:3700\", \"name\": \"RHSA-2019:3700\", \"refsource\": \"REDHAT\"}, {\"url\": \"https://access.redhat.com/errata/RHSA-2019:3933\", \"name\": \"RHSA-2019:3933\", \"refsource\": \"REDHAT\"}, {\"url\": \"https://access.redhat.com/errata/RHSA-2019:3935\", \"name\": \"RHSA-2019:3935\", \"refsource\": \"REDHAT\"}, {\"url\": \"https://access.redhat.com/errata/RHSA-2019:3932\", \"name\": \"RHSA-2019:3932\", \"refsource\": \"REDHAT\"}, {\"url\": \"https://www.oracle.com/security-alerts/cpujan2020.html\", \"name\": \"https://www.oracle.com/security-alerts/cpujan2020.html\", \"refsource\": \"MISC\"}, {\"url\": \"https://www.oracle.com/security-alerts/cpuapr2020.html\", \"name\": \"https://www.oracle.com/security-alerts/cpuapr2020.html\", \"refsource\": \"MISC\"}]}, \"data_format\": \"MITRE\", \"description\": {\"description_data\": [{\"lang\": \"eng\", \"value\": \"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).\"}]}, \"problemtype\": {\"problemtype_data\": [{\"description\": [{\"lang\": \"eng\", \"value\": \"Constant time issue\"}]}]}, \"data_version\": \"4.0\", \"CVE_data_meta\": {\"ID\": \"CVE-2018-0734\", \"STATE\": \"PUBLIC\", \"TITLE\": \"Timing attack against DSA\", \"ASSIGNER\": \"openssl-security@openssl.org\", \"DATE_PUBLIC\": \"2018-10-30\"}}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2018-0734\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-10-08T21:13:44.081Z\", \"dateReserved\": \"2017-11-30T00:00:00.000Z\", \"assignerOrgId\": \"3a12439a-ef3a-4c79-92e6-6081a721f1e5\", \"datePublished\": \"2018-10-30T12:00:00.000Z\", \"assignerShortName\": \"openssl\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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