{"id":"CVE-2018-0735","url":"https://www.cyber-defence.io/tools/cve/CVE-2018-0735","generatedAt":"2026-10-28T20:08:42.578Z","title":"The OpenSSL ECDSA signature algorithm has been shown to be vulnerable to a timing side channel attack.","description":"The OpenSSL ECDSA 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 1.1.0j (Affected 1.1.0-1.1.0i). Fixed in OpenSSL 1.1.1a (Affected 1.1.1).","published":"2018-10-29T13:29:00.000Z","lastModified":"2026-10-08T22:16:44.000Z","status":"Modified","sourceIdentifier":"openssl-security@openssl.org","cvss":{"version":"3.1","score":5.9,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"},"cwe":["CWE-327"],"affected":["openssl/openssl","canonical/ubuntu linux","debian/debian linux","nodejs/node.js","netapp/cn1610 firmware","netapp/cloud backup","netapp/element software","netapp/oncommand unified manager","netapp/santricity smi-s provider","netapp/smi-s provider","netapp/snapdrive","netapp/steelstore","oracle/api gateway","oracle/application server","oracle/enterprise manager base platform","oracle/enterprise manager ops center","oracle/mysql","oracle/peoplesoft enterprise peopletools","oracle/primavera p6 enterprise project portfolio management","oracle/secure global desktop","oracle/tuxedo","oracle/vm virtualbox"],"epss":{"score":0.04724,"percentile":0.9179,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (4.72%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://www.securityfocus.com/bid/105750","tags":["Third Party Advisory","VDB Entry"],"source":"openssl-security@openssl.org"},{"url":"http://www.securitytracker.com/id/1041986","tags":["Third Party Advisory","VDB Entry"],"source":"openssl-security@openssl.org"},{"url":"https://access.redhat.com/errata/RHSA-2019:3700","tags":["Third Party Advisory"],"source":"openssl-security@openssl.org"},{"url":"https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=56fb454d281a023b3f950d969693553d3f3ceea1","source":"openssl-security@openssl.org"},{"url":"https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=b1d6d55ece1c26fa2829e2b819b038d7b6d692b4","source":"openssl-security@openssl.org"},{"url":"https://lists.debian.org/debian-lts-announce/2018/11/msg00024.html","tags":["Mailing List","Third Party Advisory"],"source":"openssl-security@openssl.org"},{"url":"https://nodejs.org/en/blog/vulnerability/november-2018-security-releases/","tags":["Third Party Advisory"],"source":"openssl-security@openssl.org"},{"url":"https://security.netapp.com/advisory/ntap-20181105-0002/","tags":["Third Party Advisory"],"source":"openssl-security@openssl.org"},{"url":"https://usn.ubuntu.com/3840-1/","tags":["Third Party Advisory"],"source":"openssl-security@openssl.org"},{"url":"https://www.debian.org/security/2018/dsa-4348","tags":["Third Party Advisory"],"source":"openssl-security@openssl.org"},{"url":"https://www.openssl.org/news/secadv/20181029.txt","tags":["Vendor Advisory"],"source":"openssl-security@openssl.org"},{"url":"https://www.oracle.com/security-alerts/cpujan2020.html","tags":["Third Party Advisory"],"source":"openssl-security@openssl.org"},{"url":"https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html","tags":["Patch","Third Party Advisory"],"source":"openssl-security@openssl.org"},{"url":"https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html","tags":["Patch","Third Party Advisory"],"source":"openssl-security@openssl.org"},{"url":"https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html","tags":["Patch","Third Party Advisory"],"source":"openssl-security@openssl.org"},{"url":"http://www.securityfocus.com/bid/105750","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id/1041986","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2019:3700","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=56fb454d281a023b3f950d969693553d3f3ceea1","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=b1d6d55ece1c26fa2829e2b819b038d7b6d692b4","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2018/11/msg00024.html","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://nodejs.org/en/blog/vulnerability/november-2018-security-releases/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.netapp.com/advisory/ntap-20181105-0002/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/3840-1/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2018/dsa-4348","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.openssl.org/news/secadv/20181029.txt","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.oracle.com/security-alerts/cpujan2020.html","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2018-0735","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}