{"document":{"aggregate_severity":{"namespace":"https://www.suse.com/support/security/rating/","text":"low"},"category":"csaf_vex","csaf_version":"2.0","distribution":{"text":"Copyright 2024 SUSE LLC. All rights reserved.","tlp":{"label":"WHITE","url":"https://www.first.org/tlp/"}},"lang":"en","notes":[{"category":"summary","text":"SUSE CVE-2018-20187","title":"Title"},{"category":"description","text":"A side-channel issue was discovered in Botan before 2.9.0. An attacker capable of precisely measuring the time taken for ECC key generation may be able to derive information about the high bits of the secret key, as the function to derive the public point from the secret scalar uses an unblinded Montgomery ladder whose loop iteration count depends on the bitlength of the secret. This issue affects only key generation, not ECDSA signatures or ECDH key agreement.","title":"Description of the CVE"},{"category":"legal_disclaimer","text":"CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).","title":"Terms of use"}],"publisher":{"category":"vendor","contact_details":"https://www.suse.com/support/security/contact/","name":"SUSE Product Security Team","namespace":"https://www.suse.com/"},"references":[{"category":"external","summary":"CVE-2018-20187","url":"https://www.suse.com/security/cve/CVE-2018-20187"},{"category":"external","summary":"SUSE Security Ratings","url":"https://www.suse.com/support/security/rating/"},{"category":"external","summary":"SUSE Bug 1121389 for CVE-2018-20187","url":"https://bugzilla.suse.com/1121389"}],"title":"SUSE CVE CVE-2018-20187","tracking":{"current_release_date":"2025-10-07T09:44:35Z","generator":{"date":"2023-02-15T04:21:20Z","engine":{"name":"cve-database.git:bin/generate-csaf-vex.pl","version":"1"}},"id":"CVE-2018-20187","initial_release_date":"2023-02-15T04:21:20Z","revision_history":[{"date":"2023-02-15T04:21:20Z","number":"2","summary":"Current version"},{"date":"2025-01-01T07:14:49Z","number":"3","summary":"Current version"},{"date":"2025-02-15T07:56:36Z","number":"4","summary":"Current version"},{"date":"2025-02-18T06:51:43Z","number":"5","summary":"Current version"},{"date":"2025-03-14T03:45:43Z","number":"6","summary":"Current version"},{"date":"2025-03-15T11:46:36Z","number":"7","summary":"Current version"},{"date":"2025-04-25T06:43:10Z","number":"8","summary":"Current version"},{"date":"2025-10-07T09:44:35Z","number":"9","summary":"Current version"}],"status":"interim","version":"9"}},"product_tree":{"branches":[{"branches":[{"branches":[{"category":"product_name","name":"SUSE 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An attacker capable of precisely measuring the time taken for ECC key generation may be able to derive information about the high bits of the secret key, as the function to derive the public point from the secret scalar uses an unblinded Montgomery ladder whose loop iteration count depends on the bitlength of the secret. This issue affects only key generation, not ECDSA signatures or ECDH key agreement.","title":"CVE description"}],"product_status":{"known_affected":["SUSE Linux Enterprise Server 12 SP5:Botan","SUSE Linux Enterprise Server 12 SP5:libbotan-1_10-0","SUSE Linux Enterprise Server 12 SP5:libbotan-devel","SUSE Linux Enterprise Server for SAP Applications 12 SP5:Botan","SUSE Linux Enterprise Server for SAP Applications 12 SP5:libbotan-1_10-0","SUSE Linux Enterprise Server for SAP Applications 12 SP5:libbotan-devel","SUSE Linux Enterprise Software Development Kit 12 SP5:Botan","SUSE Linux Enterprise Software Development Kit 12 SP5:libbotan-1_10-0","SUSE Linux Enterprise Software Development Kit 12 SP5:libbotan-devel"],"known_not_affected":["SUSE Linux Enterprise Desktop 11 SP4:Botan","SUSE Linux Enterprise Desktop 11 SP4:libbotan-1_6_5","SUSE Linux Enterprise Desktop 11 SP4:libbotan-devel","SUSE Linux Enterprise Desktop 12 SP3:Botan","SUSE Linux Enterprise Desktop 12 SP3:libbotan-1_10-0","SUSE Linux Enterprise Desktop 12 SP3:libbotan-devel","SUSE Linux Enterprise Desktop 12 SP4:Botan","SUSE Linux Enterprise Desktop 12 SP4:libbotan-1_10-0","SUSE Linux Enterprise Desktop 12 SP4:libbotan-devel","SUSE Linux Enterprise Server 11 SP4:Botan","SUSE Linux Enterprise Server 11 SP4:libbotan-1_6_5","SUSE Linux Enterprise Server 11 SP4:libbotan-devel","SUSE Linux Enterprise Server 12 SP3:Botan","SUSE Linux Enterprise Server 12 SP3:libbotan-1_10-0","SUSE Linux Enterprise Server 12 SP3:libbotan-devel","SUSE Linux Enterprise Server 12 SP4:Botan","SUSE Linux Enterprise Server 12 SP4:libbotan-1_10-0","SUSE Linux Enterprise Server 12 SP4:libbotan-devel","SUSE Linux Enterprise Server for SAP Applications 11 SP4:Botan","SUSE Linux Enterprise Server for SAP Applications 11 SP4:libbotan-1_6_5","SUSE Linux Enterprise Server for SAP Applications 11 SP4:libbotan-devel","SUSE Linux Enterprise Server for SAP Applications 12 SP3:Botan","SUSE Linux Enterprise Server for SAP Applications 12 SP3:libbotan-1_10-0","SUSE Linux Enterprise Server for SAP Applications 12 SP3:libbotan-devel","SUSE Linux Enterprise Server for SAP Applications 12 SP4:Botan","SUSE Linux Enterprise Server for SAP Applications 12 SP4:libbotan-1_10-0","SUSE Linux Enterprise Server for SAP Applications 12 SP4:libbotan-devel","SUSE Linux Enterprise Software Development Kit 11 SP4:Botan","SUSE Linux Enterprise Software Development Kit 11 SP4:libbotan-1_6_5","SUSE Linux Enterprise Software Development Kit 11 SP4:libbotan-devel","SUSE Linux Enterprise Software Development Kit 12 SP3:Botan","SUSE Linux Enterprise Software Development Kit 12 SP3:libbotan-1_10-0","SUSE Linux Enterprise Software Development Kit 12 SP3:libbotan-devel","SUSE Linux Enterprise Software Development Kit 12 SP4:Botan","SUSE Linux Enterprise Software Development Kit 12 SP4:libbotan-1_10-0","SUSE Linux Enterprise Software Development Kit 12 SP4:libbotan-devel"],"recommended":["openSUSE Tumbleweed:Botan-2.18.1-1.3","openSUSE Tumbleweed:Botan-doc-2.18.1-1.3","openSUSE Tumbleweed:libbotan-2-18-2.18.1-1.3","openSUSE Tumbleweed:libbotan-2-18-32bit-2.18.1-1.3","openSUSE Tumbleweed:libbotan-devel-2.18.1-1.3","openSUSE Tumbleweed:libbotan-devel-32bit-2.18.1-1.3","openSUSE Tumbleweed:python3-botan-2.18.1-1.3"]},"references":[{"category":"external","summary":"CVE-2018-20187","url":"https://www.suse.com/security/cve/CVE-2018-20187"},{"category":"external","summary":"SUSE Security Ratings","url":"https://www.suse.com/support/security/rating/"},{"category":"external","summary":"SUSE Bug 1121389 for CVE-2018-20187","url":"https://bugzilla.suse.com/1121389"}],"remediations":[{"category":"vendor_fix","details":"To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n","product_ids":["openSUSE Tumbleweed:Botan-2.18.1-1.3","openSUSE Tumbleweed:Botan-doc-2.18.1-1.3","openSUSE Tumbleweed:libbotan-2-18-2.18.1-1.3","openSUSE Tumbleweed:libbotan-2-18-32bit-2.18.1-1.3","openSUSE Tumbleweed:libbotan-devel-2.18.1-1.3","openSUSE Tumbleweed:libbotan-devel-32bit-2.18.1-1.3","openSUSE Tumbleweed:python3-botan-2.18.1-1.3"]}],"scores":[{"cvss_v3":{"baseScore":2.5,"baseSeverity":"LOW","vectorString":"CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","version":"3.0"},"products":["openSUSE Tumbleweed:Botan-2.18.1-1.3","openSUSE Tumbleweed:Botan-doc-2.18.1-1.3","openSUSE Tumbleweed:libbotan-2-18-2.18.1-1.3","openSUSE Tumbleweed:libbotan-2-18-32bit-2.18.1-1.3","openSUSE Tumbleweed:libbotan-devel-2.18.1-1.3","openSUSE Tumbleweed:libbotan-devel-32bit-2.18.1-1.3","openSUSE Tumbleweed:python3-botan-2.18.1-1.3"]}],"threats":[{"category":"impact","date":"2019-01-09T11:32:23Z","details":"low"}],"title":"CVE-2018-20187"}]}