{"api_version":"1","generated_at":"2026-07-03T11:32:59+00:00","cve":"CVE-2020-12872","urls":{"html":"https://cve.report/CVE-2020-12872","api":"https://cve.report/api/cve/CVE-2020-12872.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2020-12872","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-12872"},"summary":{"title":"CVE-2020-12872","description":"yaws_config.erl in Yaws through 2.0.2 and/or 2.0.7 loads obsolete TLS ciphers, as demonstrated by ones that allow Sweet32 attacks, if running on an Erlang/OTP virtual machine with a version less than 21.0.","state":"PUBLIC","assigner":"cve@mitre.org","published_at":"2020-05-15 19:15:00","updated_at":"2023-11-07 03:15:00"},"problem_types":["CWE-326"],"metrics":[],"references":[{"url":"https://github.com/erlyaws/yaws/releases","name":"https://github.com/erlyaws/yaws/releases","refsource":"MISC","tags":["Release Notes","Third Party Advisory"],"title":"Releases · erlyaws/yaws · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://medium.com/%40charlielabs101/cve-2020-12872-df315411aa70","name":"https://medium.com/%40charlielabs101/cve-2020-12872-df315411aa70","refsource":"","tags":[],"title":"CVE 2020–12872. PoC of CVE 2020–12872 \nFirst of all… | by CharlieLabs101 | Medium","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://sweet32.info/","name":"https://sweet32.info/","refsource":"MISC","tags":["Third Party Advisory"],"title":"Sweet32: Birthday attacks on 64-bit block ciphers in TLS and OpenVPN","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://medium.com/@charlielabs101/cve-2020-12872-df315411aa70","name":"https://medium.com/@charlielabs101/cve-2020-12872-df315411aa70","refsource":"MISC","tags":["Exploit","Third Party Advisory"],"title":"CVE 2020–12872 - CharlieLabs101 - Medium","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://github.com/erlyaws/yaws/issues/402","name":"https://github.com/erlyaws/yaws/issues/402","refsource":"MISC","tags":[],"title":"CVE-2020-12872 · Issue #402 · erlyaws/yaws · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://github.com/erlyaws/yaws/blob/c0fd79f17d52628fcec527da7fa3e788c283c445/src/yaws_config.erl#L2068-L2075","name":"https://github.com/erlyaws/yaws/blob/c0fd79f17d52628fcec527da7fa3e788c283c445/src/yaws_config.erl#L2068-L2075","refsource":"MISC","tags":["Exploit","Third Party Advisory"],"title":"yaws/yaws_config.erl at c0fd79f17d52628fcec527da7fa3e788c283c445 · erlyaws/yaws · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-12872","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-12872","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2020","cve_id":"12872","vulnerable":"1","versionEndIncluding":"2.0.6","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"yaws","cpe5":"yaws","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[{"cve":"CVE-2020-12872","qid":"180658","title":"Debian Security Update for erlang (CVE-2020-12872)"}]},"source_records":{"cve_program":{"CVE_data_meta":{"ASSIGNER":"cve@mitre.org","ID":"CVE-2020-12872","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"n/a","version":{"version_data":[{"version_value":"n/a"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"yaws_config.erl in Yaws through 2.0.2 and/or 2.0.7 loads obsolete TLS ciphers, as demonstrated by ones that allow Sweet32 attacks, if running on an Erlang/OTP virtual machine with a version less than 21.0."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"url":"https://sweet32.info/","refsource":"MISC","name":"https://sweet32.info/"},{"url":"https://github.com/erlyaws/yaws/blob/c0fd79f17d52628fcec527da7fa3e788c283c445/src/yaws_config.erl#L2068-L2075","refsource":"MISC","name":"https://github.com/erlyaws/yaws/blob/c0fd79f17d52628fcec527da7fa3e788c283c445/src/yaws_config.erl#L2068-L2075"},{"url":"https://github.com/erlyaws/yaws/releases","refsource":"MISC","name":"https://github.com/erlyaws/yaws/releases"},{"refsource":"MISC","name":"https://medium.com/@charlielabs101/cve-2020-12872-df315411aa70","url":"https://medium.com/@charlielabs101/cve-2020-12872-df315411aa70"},{"refsource":"MISC","name":"https://github.com/erlyaws/yaws/issues/402","url":"https://github.com/erlyaws/yaws/issues/402"}]}},"nvd":{"publishedDate":"2020-05-15 19:15:00","lastModifiedDate":"2023-11-07 03:15:00","problem_types":["CWE-326"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE","baseScore":5.5,"baseSeverity":"MEDIUM"},"exploitabilityScore":1.8,"impactScore":3.6},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:L/AC:L/Au:N/C:P/I:N/A:N","accessVector":"LOCAL","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"NONE","availabilityImpact":"NONE","baseScore":2.1},"severity":"LOW","exploitabilityScore":3.9,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:yaws:yaws:*:*:*:*:*:*:*:*","versionStartIncluding":"2.0.2","versionEndIncluding":"2.0.6","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2020","CveId":"12872","Ordinal":"174045","Title":"CVE-2020-12872","CVE":"CVE-2020-12872","Year":"2020"},"notes":[{"CveYear":"2020","CveId":"12872","Ordinal":"1","NoteData":"yaws_config.erl in Yaws through 2.0.2 and/or 2.0.7 loads obsolete TLS ciphers, as demonstrated by ones that allow Sweet32 attacks, if running on an Erlang/OTP virtual machine with a version less than 21.0.","Type":"Description","Title":null},{"CveYear":"2020","CveId":"12872","Ordinal":"2","NoteData":"2020-05-15","Type":"Other","Title":"Published"},{"CveYear":"2020","CveId":"12872","Ordinal":"3","NoteData":"2020-09-14","Type":"Other","Title":"Modified"}]}}}