VDB
ALPINE-CVE-2022-41556
ALPINE-CVE-2022-41556
PUBLISHED
CVSS 7.5 HIGH
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.
Risk Scores
CVSS 3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Alpine:v3.21 | lighttpd | 1.4.35-r4, 0, 1.4.23-r1 |
| Alpine:v3.22 | lighttpd | 1.4.20-r1, 1.4.20-r2, 1.4.22-r0 |
| Alpine:v3.19 | lighttpd | 1.4.20-r2, 1.4.56, 1.4.66-r0 |
| Alpine:v3.24 | lighttpd | 1.4.56 |
| Alpine:v3.23 | lighttpd | 1.4.56, 1.4.66-r0, 1.4.65-r1 |
| Alpine:v3.18 | lighttpd | 1.4.47-r0, 1.4.26-r1, 1.4.30-r2 |
| Alpine:v3.17 | lighttpd | 1.4.65-r0, 1.4.64-r0, 1.4.63-r0 |
| Alpine:v3.20 | lighttpd | 1.4.39-r0, 0, 1.4.20-r1 |
| Alpine:v3.16 | lighttpd | 1.4.27-r0, 1.4.56, 1.4.64-r0 |
| Alpine:v3.15 | lighttpd | 1.4.35-r4, 1.4.36-r0, 1.4.37-r0 |
Timeline
- Oct 6, 2022 CVE Published
- Apr 30, 2026 Distribution Patch
- Jul 8, 2026 CVE Updated