VDB
ALPINE-CVE-2020-13950
ALPINE-CVE-2020-13950
PUBLISHED
CVSS 7.5 HIGH
Record from OSV · Published June 10, 2021
Apache HTTP Server versions 2.4.41 to 2.4.46 mod_proxy_http can be made to crash (NULL pointer dereference) with specially crafted requests using both Content-Length and Transfer-Encoding headers, leading to a Denial of Service
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| apache2 | Alpine:v3.11 | 2.4.48-r0 |
| apache2 | Alpine:v3.20 | 2.4.48-r0 |
| apache2 | Alpine:v3.12 | 2.4.48-r0 |
| apache2 | Alpine:v3.16 | 2.4.48-r0 |
| apache2 | Alpine:v3.18 | 2.4.48-r0 |
| apache2 | Alpine:v3.22 | 2.4.48-r0 |
| apache2 | Alpine:v3.17 | 2.4.48-r0 |
| apache2 | Alpine:v3.14 | 2.4.48-r0 |
| apache2 | Alpine:v3.24 | 2.4.48-r0 |
| apache2 | Alpine:v3.19 | 2.4.48-r0 |
| apache2 | Alpine:v3.13 | 2.4.48-r0 |
| apache2 | Alpine:v3.15 | 2.4.48-r0 |
3 more packages have a fixed version. See every fix in Lookup.
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:v3.11 | apache2 | 2.2.17-r4, 2.2.16-r0, 2.2.16-r1 |
| Alpine:v3.20 | apache2 | 2.2.16-r3, 2.2.16-r1, 2.2.16-r0 |
| Alpine:v3.12 | apache2 | 2.2.17-r5, 2.4.23-r10, 2.4.23-r7 |
| Alpine:v3.16 | apache2 | 2.4.23-r6, 2.4.38-r0, 2.4.20-r1 |
| Alpine:v3.18 | apache2 | 2.2.20-r0, 2.4.18-r2, 2.4.23-r1 |
| Alpine:v3.22 | apache2 | 2.2.17-r2, 2.4.17-r0, 2.4.39-r0 |
| Alpine:v3.17 | apache2 | 2.4.17-r4, 0, 2.2.16-r1 |
| Alpine:v3.14 | apache2 | 2.4.4-r1, 2.4.16-r0, 2.2.16-r3 |
| Alpine:v3.24 | apache2 | 0 |
| Alpine:v3.19 | apache2 | 2.4.23-r1, 2.2.16-r0, 2.4.25-r1 |
| Alpine:v3.13 | apache2 | 2.4.28-r0, 0, 2.2.16-r0 |
| Alpine:v3.15 | apache2 | 2.4.23-r7, 2.4.41-r0, 2.4.46-r2 |
| Alpine:v3.21 | apache2 | 2.2.16-r0, 2.4.20-r1, 2.2.16-r1 |
| Alpine:v3.23 | apache2 | 2.4.3-r0, 2.2.20-r0, 2.4.6-r0 |
| Alpine:v3.10 | apache2 | 2.4.6-r1, 2.2.17-r2, 0 |
Timeline
- Jun 10, 2021 CVE Published
- Aug 5, 2026 CVE Updated
- Aug 8, 2026 Distribution Patch
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln ALPINE-CVE-2020-13950
vulnetix vdb fixes ALPINE-CVE-2020-13950Or with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
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