{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-49812","assignerOrgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","state":"PUBLISHED","assignerShortName":"apache","dateReserved":"2025-06-11T09:36:54.723Z","datePublished":"2025-07-10T16:58:23.943Z","dateUpdated":"2025-11-04T21:11:18.699Z"},"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Apache HTTP Server","vendor":"Apache Software Foundation","versions":[{"lessThanOrEqual":"2.4.63","status":"affected","version":"0","versionType":"semver"}]}],"credits":[{"lang":"en","type":"finder","value":"Robert Merget (Technology Innovation Institute)"},{"lang":"en","type":"finder","value":"Nurullah Erinola (Ruhr University Bochum)"},{"lang":"en","type":"finder","value":"Marcel Maehren (Ruhr University Bochum)"},{"lang":"en","type":"finder","value":"Lukas Knittel (Ruhr University Bochum)"},{"lang":"en","type":"finder","value":"Sven Hebrok (Paderborn University)"},{"lang":"en","type":"finder","value":"Marcus Brinkmann (Ruhr University Bochum)"},{"lang":"en","type":"finder","value":"Juraj Somorovsky (Paderborn University)"},{"lang":"en","type":"finder","value":"Jörg Schwenk (Ruhr University Bochum)"}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"In some mod_ssl configurations on Apache HTTP Server versions through to 2.4.63, an HTTP desynchronisation attack allows a man-in-the-middle attacker to hijack an HTTP session via a TLS upgrade.<br><br>Only configurations using \"SSLEngine optional\" to enable TLS upgrades are affected. Users are recommended to upgrade to version 2.4.64, which removes support for TLS upgrade."}],"value":"In some mod_ssl configurations on Apache HTTP Server versions through to 2.4.63, an HTTP desynchronisation attack allows a man-in-the-middle attacker to hijack an HTTP session via a TLS upgrade.\n\nOnly configurations using \"SSLEngine optional\" to enable TLS upgrades are affected. Users are recommended to upgrade to version 2.4.64, which removes support for TLS upgrade."}],"metrics":[{"other":{"content":{"text":"moderate"},"type":"Textual description of severity"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-287","description":"CWE-287 Improper Authentication","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","shortName":"apache","dateUpdated":"2025-07-10T16:58:23.943Z"},"references":[{"tags":["vendor-advisory"],"url":"https://httpd.apache.org/security/vulnerabilities_24.html"}],"source":{"discovery":"UNKNOWN"},"timeline":[{"lang":"en","time":"2025-04-22T07:26:00.000Z","value":"Report received"},{"lang":"en","time":"2025-07-07T00:00:00.000Z","value":"2.4.x revision 1927045"}],"title":"Apache HTTP Server: mod_ssl TLS upgrade attack","x_generator":{"engine":"Vulnogram 0.2.0"}},"adp":[{"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.4,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"HIGH","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2025-07-11T16:05:54.218961Z","id":"CVE-2025-49812","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2025-07-15T19:56:14.709Z"}},{"title":"CVE Program Container","references":[{"url":"https://lists.debian.org/debian-lts-announce/2025/08/msg00009.html"},{"url":"http://www.openwall.com/lists/oss-security/2025/07/09/3"},{"url":"http://www.openwall.com/lists/oss-security/2025/07/10/2"},{"url":"http://www.openwall.com/lists/oss-security/2025/07/10/9"}],"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2025-11-04T21:11:18.699Z"}}]}}