CVE-2021-44224

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "http://httpd.apache.org/security/vulnerabilities_24.html", "name": "http://httpd.apache.org/security/vulnerabilities_24.html", "tags": ["Vendor Advisory"], "refsource": "MISC"}, {"url": "http://www.openwall.com/lists/oss-security/2021/12/20/3", "name": "[oss-security] 20211220 CVE-2021-44224: Apache HTTP Server: Possible NULL dereference or SSRF in forward proxy configurations in Apache HTTP Server 2.4.51 and earlier", "tags": ["Mailing List", "Third Party Advisory"], "refsource": "MLIST"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BFSWOH4X77CV7AH7C4RMHUBDWKQDL4YH/", "name": "FEDORA-2021-29a536c2ae", "tags": ["Mailing List", "Third Party Advisory"], "refsource": "FEDORA"}, {"url": "https://security.netapp.com/advisory/ntap-20211224-0001/", "name": "https://security.netapp.com/advisory/ntap-20211224-0001/", "tags": ["Third Party Advisory"], "refsource": "CONFIRM"}, {"url": "https://www.debian.org/security/2022/dsa-5035", "name": "DSA-5035", "tags": ["Third Party Advisory"], "refsource": "DEBIAN"}, {"url": "https://www.tenable.com/security/tns-2022-01", "name": "https://www.tenable.com/security/tns-2022-01", "tags": ["Third Party Advisory"], "refsource": "CONFIRM"}, {"url": "https://www.tenable.com/security/tns-2022-03", "name": "https://www.tenable.com/security/tns-2022-03", "tags": ["Third Party Advisory"], "refsource": "CONFIRM"}, {"url": "https://www.oracle.com/security-alerts/cpujan2022.html", "name": "https://www.oracle.com/security-alerts/cpujan2022.html", "tags": ["Patch", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RGWILBORT67SHMSLYSQZG2NMXGCMPUZO/", "name": "FEDORA-2022-b4103753e9", "tags": ["Mailing List", "Third Party Advisory"], "refsource": "FEDORA"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Z7H26WJ6TPKNWV3QKY4BHKUKQVUTZJTD/", "name": "FEDORA-2022-21264ec6db", "tags": ["Mailing List", "Third Party Advisory"], "refsource": "FEDORA"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/X73C35MMMZGBVPQQCH7LQZUMYZNQA5FO/", "name": "FEDORA-2022-78e3211c55", "tags": ["Mailing List", "Third Party Advisory"], "refsource": "FEDORA"}, {"url": "https://www.oracle.com/security-alerts/cpuapr2022.html", "name": "https://www.oracle.com/security-alerts/cpuapr2022.html", "tags": ["Patch", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://support.apple.com/kb/HT213255", "name": "https://support.apple.com/kb/HT213255", "tags": ["Third Party Advisory"], "refsource": "CONFIRM"}, {"url": "https://support.apple.com/kb/HT213256", "name": "https://support.apple.com/kb/HT213256", "tags": ["Third Party Advisory"], "refsource": "CONFIRM"}, {"url": "https://support.apple.com/kb/HT213257", "name": "https://support.apple.com/kb/HT213257", "tags": ["Third Party Advisory"], "refsource": "CONFIRM"}, {"url": "http://seclists.org/fulldisclosure/2022/May/38", "name": "20220516 APPLE-SA-2022-05-16-2 macOS Monterey 12.4", "tags": ["Mailing List", "Third Party Advisory"], "refsource": "FULLDISC"}, {"url": "http://seclists.org/fulldisclosure/2022/May/33", "name": "20220516 APPLE-SA-2022-05-16-4 Security Update 2022-004 Catalina", "tags": ["Mailing List", "Third Party Advisory"], "refsource": "FULLDISC"}, {"url": "http://seclists.org/fulldisclosure/2022/May/35", "name": "20220516 APPLE-SA-2022-05-16-3 macOS Big Sur 11.6.6", "tags": ["Mailing List", "Third Party Advisory"], "refsource": "FULLDISC"}, {"url": "https://security.gentoo.org/glsa/202208-20", "name": "GLSA-202208-20", "tags": ["Third Party Advisory"], "refsource": "GENTOO"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "A crafted URI sent to httpd configured as a forward proxy (ProxyRequests on) can cause a crash (NULL pointer dereference) or, for configurations mixing forward and reverse proxy declarations, can allow for requests to be directed to a declared Unix Domain Socket endpoint (Server Side Request Forgery). This issue affects Apache HTTP Server 2.4.7 up to 2.4.51 (included)."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-476"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2021-44224", "ASSIGNER": "security@apache.org"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 6.4, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "NONE"}, "severity": "MEDIUM", "acInsufInfo": false, "impactScore": 4.9, "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.2, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 4.2, "exploitabilityScore": 3.9}}, "publishedDate": "2021-12-20T12:15Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "2.4.52", "versionStartIncluding": "2.4.7"}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:tenable:tenable.sc:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "5.20.0", "versionStartIncluding": "5.14.0"}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:tenable:tenable.sc:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "202201.1", "versionStartIncluding": "5.16.0"}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:oracle:http_server:12.2.1.3.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:oracle:communications_operations_monitor:4.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:oracle:instantis_enterprisetrack:17.1:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": 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