{"id":"ALPINE-CVE-2022-41556","details":"A resource leak in gw_backend.c in lighttpd 1.4.56 through 1.4.66 could lead to a denial of service (connection-slot exhaustion) after a large amount of anomalous TCP behavior by clients. It is related to RDHUP mishandling in certain HTTP/1.1 chunked situations. Use of mod_fastcgi is, for example, affected. This is fixed in 1.4.67.","modified":"2026-08-27T22:18:01.917308913Z","published":"2022-10-06T18:17:03.620Z","upstream":["CVE-2022-41556"],"references":[{"type":"ADVISORY","url":"https://security.alpinelinux.org/vuln/CVE-2022-41556"}],"affected":[{"package":{"name":"lighttpd","ecosystem":"Alpine:v3.15","purl":"pkg:apk/alpine/lighttpd?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.4.56"},{"fixed":"1.4.67-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2022-41556.json"}},{"package":{"name":"lighttpd","ecosystem":"Alpine:v3.16","purl":"pkg:apk/alpine/lighttpd?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.4.56"},{"fixed":"1.4.67-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2022-41556.json"}},{"package":{"name":"lighttpd","ecosystem":"Alpine:v3.17","purl":"pkg:apk/alpine/lighttpd?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.4.56"},{"fixed":"1.4.67-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2022-41556.json"}},{"package":{"name":"lighttpd","ecosystem":"Alpine:v3.18","purl":"pkg:apk/alpine/lighttpd?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.4.56"},{"fixed":"1.4.67-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2022-41556.json"}},{"package":{"name":"lighttpd","ecosystem":"Alpine:v3.19","purl":"pkg:apk/alpine/lighttpd?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.4.56"},{"fixed":"1.4.67-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2022-41556.json"}},{"package":{"name":"lighttpd","ecosystem":"Alpine:v3.20","purl":"pkg:apk/alpine/lighttpd?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.4.56"},{"fixed":"1.4.67-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2022-41556.json"}},{"package":{"name":"lighttpd","ecosystem":"Alpine:v3.21","purl":"pkg:apk/alpine/lighttpd?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.4.56"},{"fixed":"1.4.67-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2022-41556.json"}},{"package":{"name":"lighttpd","ecosystem":"Alpine:v3.22","purl":"pkg:apk/alpine/lighttpd?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.4.56"},{"fixed":"1.4.67-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2022-41556.json"}},{"package":{"name":"lighttpd","ecosystem":"Alpine:v3.23","purl":"pkg:apk/alpine/lighttpd?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.4.56"},{"fixed":"1.4.67-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2022-41556.json"}},{"package":{"name":"lighttpd","ecosystem":"Alpine:v3.24","purl":"pkg:apk/alpine/lighttpd?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.4.56"},{"fixed":"1.4.67-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2022-41556.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}