CVE-2018-0734
The OpenSSL DSA signature algorithm has been shown to be vulnerable to a timing side channel attack.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 12.2%, higher than 96% of all known CVEs. Patch or mitigate before the next change window.
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).
- CVSS 3.1
- 5.9 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 12.15% probability · 96th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-327
- Affected
- openssl/openssl · canonical/ubuntu linux · debian/debian linux · nodejs/node.js · netapp/cn1610 firmware · netapp/cloud backup · netapp/oncommand unified manager · netapp/santricity smi-s provider · netapp/snapcenter · netapp/steelstore · netapp/storage automation store · oracle/api gateway · oracle/e-business suite technology stack · oracle/enterprise manager base platform · oracle/enterprise manager ops center · oracle/mysql enterprise backup · oracle/peoplesoft enterprise peopletools · oracle/primavera p6 professional project management · oracle/tuxedo
- Source
- openssl-security@openssl.org
EPSS 12.2% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00030.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00056.htmlMailing List, Third Party Advisory
- http://www.securityfocus.com/bid/105758Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2019:2304Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3700Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3932Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3933Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3935Third Party Advisory
- https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=43e6a58d4991a451daf4891ff05a48735df871ac
- https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=8abfe72e8c1de1b95f50aa0d9134803b4d00070f
- https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=ef11e19d1365eea2b1851e6f540a0bf365d303e7
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EWC42UXL5GHTU5G77VKBF6JYUUNGSHOM/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y3IVFGSERAZLNJCK35TEM2R4726XIH3Z/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZBEV5QGDRFUZDMNECFXUSN5FMYOZDE4V/
- https://nodejs.org/en/blog/vulnerability/november-2018-security-releases/Third Party Advisory
- https://security.netapp.com/advisory/ntap-20181105-0002/Third Party Advisory
- https://security.netapp.com/advisory/ntap-20190118-0002/Third Party Advisory
- https://security.netapp.com/advisory/ntap-20190423-0002/Third Party Advisory
- https://usn.ubuntu.com/3840-1/Third Party Advisory
- https://www.debian.org/security/2018/dsa-4348Third Party Advisory
- https://www.debian.org/security/2018/dsa-4355Third Party Advisory
- https://www.openssl.org/news/secadv/20181030.txtVendor Advisory
- https://www.oracle.com/security-alerts/cpuapr2020.htmlThird Party Advisory
- https://www.oracle.com/security-alerts/cpujan2020.htmlThird Party Advisory
- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.htmlPatch, Third Party Advisory
- https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.htmlPatch, Third Party Advisory
- https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.htmlPatch, Third Party Advisory
- https://www.tenable.com/security/tns-2018-16Third Party Advisory
- https://www.tenable.com/security/tns-2018-17Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00030.htmlMailing List, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.