{"id":"AZL-7043","summary":"CVE-2021-44224 affecting package httpd for versions less than 2.4.52-1","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).","modified":"2026-04-21T04:36:23.690470Z","published":"2021-12-20T12:15:07Z","upstream":["CVE-2021-44224"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-44224"}],"affected":[{"package":{"name":"httpd","ecosystem":"Azure Linux:2","purl":"pkg:rpm/azure-linux/httpd"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.52-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-7043.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H"}]}