VDB
ALPINE-CVE-2021-44224
ALPINE-CVE-2021-44224
PUBLISHED
CVSS 8.199999809265137 HIGH
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).
Risk Scores
CVSS 3.1
8.199999809265137
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Alpine:v3.23 | apache2 | 2.2.21-r1, 0, 2.2.16-r0 |
| Alpine:v3.14 | apache2 | 2.4.17-r7, 2.2.17-r5, 2.4.46-r3 |
| Alpine:v3.20 | apache2 | 2.2.17-r0, 2.2.16-r3, 2.2.16-r2 |
| Alpine:v3.13 | apache2 | 2.2.17-r1, 2.4.12-r3, 2.4.37-r1 |
| Alpine:v3.22 | apache2 | 2.4.46-r0, 0, 2.2.16-r3 |
| Alpine:v3.24 | apache2 | 0 |
| Alpine:v3.16 | apache2 | 2.4.37-r1, 2.4.16-r0, 0 |
| Alpine:v3.17 | apache2 | 2.4.33-r0, 2.2.16-r0, 2.2.16-r1 |
| Alpine:v3.19 | apache2 | 2.2.17-r3, 2.4.27-r0, 2.4.26-r0 |
| Alpine:v3.18 | apache2 | 2.4.12-r0, 0, 2.2.16-r0 |
| Alpine:v3.12 | apache2 | 2.2.16-r0, 2.2.16-r1, 2.2.16-r2 |
| Alpine:v3.15 | apache2 | 2.4.50-r0, 2.2.16-r1, 2.2.16-r2 |
| Alpine:v3.21 | apache2 | 2.2.16-r1, 0, 2.4.23-r10 |
Timeline
- Dec 20, 2021 CVE Published
- Jun 15, 2026 CVE Updated
- Aug 8, 2026 Distribution Patch