{"id":"CVE-2021-25635","state":"PUBLISHED","title":"Content Manipulation with Certificate Validation Attack","description":"An Improper Certificate Validation vulnerability in LibreOffice allowed \nan attacker to self sign an ODF document, with a signature untrusted by \nthe target, then modify it to change the signature algorithm to an \ninvalid (or unknown to LibreOffice) algorithm and LibreOffice would incorrectly present such a signature with an unknown algorithm as a \nvalid signature issued by a trusted person\n\n\nThis issue affects LibreOffice: from 7.0 before 7.0.5, from 7.1 before 7.1.1.","publishedAt":"2025-03-21T14:52:50.484Z","updatedAt":"2025-03-21T15:13:24.100Z","severity":{"score":5.2,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:H/SI:H/SA:H","source":"Document Fdn."},"assigner":"Document Fdn.","products":["The Document Foundation LibreOffice"],"affected":[{"vendor":"The Document Foundation","product":"LibreOffice","defaultStatus":"unknown","versions":[{"version":"7.0","status":"affected","lessThan":"7.0.5","versionType":"7.0 series"},{"version":"7.1","status":"affected","lessThan":"7.1.1","versionType":"7.1 series"}]}],"references":["https://www.libreoffice.org/about-us/security/advisories/cve-2021-25635/"],"weaknesses":["CWE-295"],"ingestedAt":"2026-10-29T19:48:10.461Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/25xxx/CVE-2021-25635.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-25635","state":"PUBLISHED","datePublished":"2025-03-21T14:52:50.484Z","dateUpdated":"2025-03-21T15:13:24.100Z","assignerShortName":"Document Fdn.","assignerOrgId":"4fe7d05b-1353-44cc-8b7a-1e416936dff2","dateReserved":"2021-01-19T22:48:43.994Z"},"containers":{"cna":{"title":"Content Manipulation with Certificate Validation Attack","descriptions":[{"lang":"en","value":"An Improper Certificate Validation vulnerability in LibreOffice allowed \nan attacker to self sign an ODF document, with a signature untrusted by \nthe target, then modify it to change the signature algorithm to an \ninvalid (or unknown to LibreOffice) algorithm and LibreOffice would incorrectly present such a signature with an unknown algorithm as a \nvalid signature issued by a trusted person\n\n\nThis issue affects LibreOffice: from 7.0 before 7.0.5, from 7.1 before 7.1.1."}],"affected":[{"vendor":"The Document Foundation","product":"LibreOffice","defaultStatus":"unknown","versions":[{"version":"7.0","status":"affected","lessThan":"7.0.5","versionType":"7.0 series"},{"version":"7.1","status":"affected","lessThan":"7.1.1","versionType":"7.1 series"}]}],"references":[{"url":"https://www.libreoffice.org/about-us/security/advisories/cve-2021-25635/"}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"HIGH","attackRequirements":"NONE","attackVector":"LOCAL","baseScore":5.2,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"HIGH","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","userInteraction":"PASSIVE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:H/SI:H/SA:H","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-295","description":"CWE-295 Improper Certificate Validation","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"Document Fdn.","orgId":"4fe7d05b-1353-44cc-8b7a-1e416936dff2","dateUpdated":"2025-03-21T14:52:50.484Z"},"credits":[{"lang":"en","type":"finder","value":"NDS of Ruhr University Bochum"}],"datePublic":"2021-10-11T14:00:00.000Z","impacts":[{"capecId":"CAPEC-475","descriptions":[{"lang":"en","value":"CAPEC-475 Signature Spoofing by Improper Validation"}]}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 0.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-03-21T15:13:07.905943Z","id":"CVE-2021-25635","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-03-21T15:13:24.100Z"}}]}}}