VDB
ALPINE-CVE-2020-11993
ALPINE-CVE-2020-11993
PUBLISHED
CVSS 7.5 HIGH
Apache HTTP Server versions 2.4.20 to 2.4.43 When trace/debug was enabled for the HTTP/2 module and on certain traffic edge patterns, logging statements were made on the wrong connection, causing concurrent use of memory pools. Configuring the LogLevel of mod_http2 above "info" will mitigate this vulnerability for unpatched servers.
Risk Scores
CVSS v3.1
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:v3.11 | apache2 | 2.4.9-r1, 2.4.9-r0, 2.4.7-r0 |
| Alpine:v3.21 | apache2 | 2.4.9-r1, 0, 2.2.16-r0 |
| Alpine:v3.17 | apache2 | 2.4.9-r1, 2.4.9-r0, 2.4.7-r0 |
| Alpine:v3.18 | apache2 | 2.4.9-r1, 2.4.9-r0, 2.4.7-r0 |
| Alpine:v3.23 | apache2 | 2.2.16-r1, 2.4.9-r1, 2.4.9-r0 |
| Alpine:v3.9 | apache2 | 2.4.9-r0, 2.4.7-r0, 2.4.6-r4 |
| Alpine:v3.13 | apache2 | 2.4.20-r1, 2.4.9-r1, 2.4.9-r0 |
| Alpine:v3.22 | apache2 | 2.2.16-r1, 2.2.16-r2, 2.2.16-r3 |
| Alpine:v3.20 | apache2 | 0, 2.2.16-r0, 2.2.16-r1 |
| Alpine:v3.14 | apache2 | 2.4.9-r1, 2.4.9-r0, 2.4.7-r0 |
| Alpine:v3.19 | apache2 | 2.4.3-r2, 2.4.9-r0, 2.4.7-r0 |
| Alpine:v3.12 | apache2 | 0, 2.2.16-r1, 2.2.16-r3 |
| Alpine:v3.16 | apache2 | 2.4.35-r0, 2.4.9-r0, 2.4.7-r0 |
| Alpine:v3.10 | apache2 | 2.4.9-r1, 2.4.9-r0, 2.4.7-r0 |
| Alpine:v3.15 | apache2 | 0, 2.2.16-r0, 2.2.16-r1 |
Timeline
- Aug 7, 2020 CVE Published
- Dec 3, 2025 CVE Updated
- Apr 30, 2026 Distribution Patch