{"id":"BIT-apache-2021-44224","summary":"Possible NULL dereference or SSRF in forward proxy configurations in Apache HTTP Server 2.4.51 and earlier","details":"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).","aliases":["CVE-2021-44224"],"modified":"2025-05-20T10:02:07.006Z","published":"2024-03-06T10:54:18.475Z","database_specific":{"cpes":["cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*"],"severity":"High"},"references":[{"type":"WEB","url":"http://httpd.apache.org/security/vulnerabilities_24.html"},{"type":"WEB","url":"http://seclists.org/fulldisclosure/2022/May/33"},{"type":"WEB","url":"http://seclists.org/fulldisclosure/2022/May/35"},{"type":"WEB","url":"http://seclists.org/fulldisclosure/2022/May/38"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2021/12/20/3"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BFSWOH4X77CV7AH7C4RMHUBDWKQDL4YH/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RGWILBORT67SHMSLYSQZG2NMXGCMPUZO/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X73C35MMMZGBVPQQCH7LQZUMYZNQA5FO/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z7H26WJ6TPKNWV3QKY4BHKUKQVUTZJTD/"},{"type":"WEB","url":"https://security.gentoo.org/glsa/202208-20"},{"type":"WEB","url":"https://security.netapp.com/advisory/ntap-20211224-0001/"},{"type":"WEB","url":"https://support.apple.com/kb/HT213255"},{"type":"WEB","url":"https://support.apple.com/kb/HT213256"},{"type":"WEB","url":"https://support.apple.com/kb/HT213257"},{"type":"WEB","url":"https://www.debian.org/security/2022/dsa-5035"},{"type":"WEB","url":"https://www.oracle.com/security-alerts/cpuapr2022.html"},{"type":"WEB","url":"https://www.oracle.com/security-alerts/cpujan2022.html"},{"type":"WEB","url":"https://www.tenable.com/security/tns-2022-01"},{"type":"WEB","url":"https://www.tenable.com/security/tns-2022-03"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-44224"}],"affected":[{"package":{"name":"apache","ecosystem":"Bitnami","purl":"pkg:bitnami/apache"},"ranges":[{"type":"SEMVER","events":[{"introduced":"2.4.7"},{"fixed":"2.4.52"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/apache/BIT-apache-2021-44224.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H"}]}],"schema_version":"1.7.3"}