{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2025-3891", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "state": "PUBLISHED", "assignerShortName": "redhat", "dateReserved": "2025-04-23T06:53:53.124Z", "datePublished": "2025-04-29T11:56:50.808Z", "dateUpdated": "2025-05-07T02:16:52.342Z"}, "containers": {"cna": {"title": "Mod_auth_openidc: dos via empty post in mod_auth_openidc with oidcpreservepost enabled", "metrics": [{"other": {"content": {"value": "Moderate", "namespace": "https://access.redhat.com/security/updates/classification/"}, "type": "Red Hat severity rating"}}, {"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "format": "CVSS"}], "descriptions": [{"lang": "en", "value": "A flaw was found in the mod_auth_openidc module for Apache httpd. This flaw allows a remote, unauthenticated attacker to trigger a denial of service by sending an empty POST request when the OIDCPreservePost directive is enabled. The server crashes consistently, affecting availability."}], "affected": [{"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "mod_auth_openidc:2.3", "defaultStatus": "affected", "versions": [{"version": "8100020250426100353.489197e6", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:enterprise_linux:8::appstream"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 7", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "mod_auth_openidc", "defaultStatus": "affected", "cpes": ["cpe:/o:redhat:enterprise_linux:7"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "mod_auth_openidc", "defaultStatus": "affected", "cpes": ["cpe:/o:redhat:enterprise_linux:9"]}], "references": [{"url": "https://access.redhat.com/errata/RHSA-2025:4597", "name": "RHSA-2025:4597", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/security/cve/CVE-2025-3891", "tags": ["vdb-entry", "x_refsource_REDHAT"]}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2361633", "name": "RHBZ#2361633", "tags": ["issue-tracking", "x_refsource_REDHAT"]}], "datePublic": "2025-04-29T11:37:07.680Z", "problemTypes": [{"descriptions": [{"cweId": "CWE-248", "description": "Uncaught Exception", "lang": "en", "type": "CWE"}]}], "x_redhatCweChain": "CWE-248: Uncaught Exception", "timeline": [{"lang": "en", "time": "2025-04-22T11:16:32.159000+00:00", "value": "Reported to Red Hat."}, {"lang": "en", "time": "2025-04-29T11:37:07.680000+00:00", "value": "Made public."}], "providerMetadata": {"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2025-05-07T02:16:52.342Z"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2025-04-29T13:28:13.900026Z", "id": "CVE-2025-3891", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-04-29T13:28:56.905Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-3891", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2025-04-29T13:28:13.900026Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-04-29T13:28:45.457Z"}}], "cna": {"title": "Mod_auth_openidc: dos via empty post in mod_auth_openidc with oidcpreservepost enabled", "metrics": [{"other": {"type": "Red Hat severity rating", "content": {"value": "Moderate", "namespace": "https://access.redhat.com/security/updates/classification/"}}}, {"format": "CVSS", "cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}}], "affected": [{"cpes": ["cpe:/a:redhat:enterprise_linux:8::appstream"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8", "versions": [{"status": "unaffected", "version": "8100020250426100353.489197e6", "lessThan": "*", "versionType": "rpm"}], "packageName": "mod_auth_openidc:2.3", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/o:redhat:enterprise_linux:7"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 7", "packageName": "mod_auth_openidc", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/o:redhat:enterprise_linux:9"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "packageName": "mod_auth_openidc", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}], "timeline": [{"lang": "en", "time": "2025-04-22T11:16:32.159000+00:00", "value": "Reported to Red Hat."}, {"lang": "en", "time": "2025-04-29T11:37:07.680000+00:00", "value": "Made public."}], "datePublic": "2025-04-29T11:37:07.680Z", "references": [{"url": "https://access.redhat.com/errata/RHSA-2025:4597", "name": "RHSA-2025:4597", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/security/cve/CVE-2025-3891", "tags": ["vdb-entry", "x_refsource_REDHAT"]}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2361633", "name": "RHBZ#2361633", "tags": ["issue-tracking", "x_refsource_REDHAT"]}], "descriptions": [{"lang": "en", "value": "A flaw was found in the mod_auth_openidc module for Apache httpd. This flaw allows a remote, unauthenticated attacker to trigger a denial of service by sending an empty POST request when the OIDCPreservePost directive is enabled. The server crashes consistently, affecting availability."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-248", "description": "Uncaught Exception"}]}], "providerMetadata": {"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2025-05-07T02:16:52.342Z"}, "x_redhatCweChain": "CWE-248: Uncaught Exception"}}, "cveMetadata": {"cveId": "CVE-2025-3891", "state": "PUBLISHED", "dateUpdated": "2025-05-07T02:16:52.342Z", "dateReserved": "2025-04-23T06:53:53.124Z", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "datePublished": "2025-04-29T11:56:50.808Z", "assignerShortName": "redhat"}, "dataVersion": "5.1"}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "A flaw was found in the mod_auth_openidc module for Apache httpd. This flaw allows a remote, unauthenticated attacker to trigger a denial of service by sending an empty POST request when the OIDCPreservePost directive is enabled. The server crashes consistently, affecting availability."}, {"lang": "es", "value": "Se detect\u00f3 una falla en el m\u00f3dulo mod_auth_openidc para Apache httpd. Esta falla permite que un atacante remoto no autenticado active una denegaci\u00f3n de servicio enviando una solicitud POST vac\u00eda cuando la directiva OIDCPreservePost est\u00e1 habilitada. El servidor se bloquea constantemente, lo que afecta la disponibilidad."}], "id": "CVE-2025-3891", "lastModified": "2025-05-07T03:15:18.420", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "secalert@redhat.com", "type": "Secondary"}]}, "published": "2025-04-29T12:15:32.137", "references": [{"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2025:4597"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/security/cve/CVE-2025-3891"}, {"source": "secalert@redhat.com", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2361633"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Undergoing Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-248"}], "source": "secalert@redhat.com", "type": "Secondary"}]}

{"affected_release": [{"advisory": "RHSA-2025:4597", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "mod_auth_openidc:2.3-8100020250426100353.489197e6", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2025-05-06T00:00:00Z"}], "bugzilla": {"description": "mod_auth_openidc: DoS via Empty POST in mod_auth_openidc with OIDCPreservePost Enabled", "id": "2361633", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2361633"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "status": "verified"}, "cwe": "CWE-248", "details": ["A flaw was found in the mod_auth_openidc module for Apache httpd. This flaw allows a remote, unauthenticated attacker to trigger a denial of service by sending an empty POST request when the OIDCPreservePost directive is enabled. The server crashes consistently, affecting availability.", "A flaw was found in the mod_auth_openidc module for Apache httpd. This flaw allows a remote, unauthenticated attacker to trigger a denial of service by sending an empty POST request when the OIDCPreservePost directive is enabled. The server crashes consistently, affecting availability."], "name": "CVE-2025-3891", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "mod_auth_openidc", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "mod_auth_openidc", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-04-29T11:37:07Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-3891\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-3891"], "threat_severity": "Moderate"}