VULNERABILITY INTELLIGENCE
CVE-2022-41556
CVSS score7.5 HIGH
EPSS probability3.83%
CISA KEVNot currently listed
Published2022-10-06
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Description
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.
Weakness classification
- CWE-401: Missing Release of Memory after Effective Lifetime
Primary references
- cve@mitre.org — Patch, Third Party Advisory
- cve@mitre.org — Third Party Advisory
- cve@mitre.org — Exploit, Issue Tracking, Third Party Advisory
- cve@mitre.org
- cve@mitre.org — Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Patch, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Exploit, Issue Tracking, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory