{"id":"CVE-2020-11501","state":"PUBLISHED","title":"GnuTLS 3.6.x before 3.6.13 uses incorrect cryptography for DTLS. The earliest affected version is 3.6.3 (2018-07-16) because of an error in a 2017-10-06 commit. The DTLS client alw","description":"GnuTLS 3.6.x before 3.6.13 uses incorrect cryptography for DTLS. The earliest affected version is 3.6.3 (2018-07-16) because of an error in a 2017-10-06 commit. The DTLS client always uses 32 '\\0' bytes instead of a random value, and thus contributes no randomness to a DTLS negotiation. This breaks the security guarantees of the DTLS protocol.","publishedAt":"2020-04-03T12:42:28.000Z","updatedAt":"2026-10-14T08:55:12.970Z","severity":null,"assigner":"mitre","products":["n/a n/a"],"affected":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}],"references":["https://security.gentoo.org/glsa/202004-06","https://gitlab.com/gnutls/gnutls/-/issues/960","https://gitlab.com/gnutls/gnutls/-/commit/5b595e8e52653f6c5726a4cdd8fddeb6e83804d2","https://www.gnutls.org/security-new.html#GNUTLS-SA-2020-03-31","https://www.debian.org/security/2020/dsa-4652","http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00015.html","https://security.netapp.com/advisory/ntap-20200416-0002/","https://usn.ubuntu.com/4322-1/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WDYY3R4F5CUTFAMXH2C5NKYFVDEJLTT7/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ILMOWPKMTZAIMK5F32TUMO34XCABUCFJ/","https://cert-portal.siemens.com/productcert/html/ssa-398330.html"],"weaknesses":[],"ingestedAt":"2026-10-29T19:46:24.834Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2020/11xxx/CVE-2020-11501.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2020-11501","state":"PUBLISHED","datePublished":"2020-04-03T12:42:28.000Z","dateUpdated":"2026-10-14T08:55:12.970Z","assignerShortName":"mitre","assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateReserved":"2020-04-03T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"GnuTLS 3.6.x before 3.6.13 uses incorrect cryptography for DTLS. 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