VDB
ALPINE-CVE-2020-24606
ALPINE-CVE-2020-24606
PUBLISHED
CVSS 7.5 HIGH
Squid before 4.13 and 5.x before 5.0.4 allows a trusted peer to perform Denial of Service by consuming all available CPU cycles during handling of a crafted Cache Digest response message. This only occurs when cache_peer is used with the cache digests feature. The problem exists because peerDigestHandleReply() livelocking in peer_digest.cc mishandles EOF.
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:v3.21 | squid | 2.7.6-r11, 2.7.6-r12, 2.7.6-r2 |
| Alpine:v3.18 | squid | 3.2.6-r0, 4.9-r0, 4.8-r1 |
| Alpine:v3.10 | squid | 4.8-r1, 3.2.0.17-r2, 3.2.0.18-r0 |
| Alpine:v3.9 | squid | 4.8-r0, 4.4-r1, 4.4-r0 |
| Alpine:v3.15 | squid | 2.7.9-r4, 4.9-r0, 4.8-r1 |
| Alpine:v3.12 | squid | 3.5.10-r0, 3.4.10-r0, 3.4.11-r0 |
| Alpine:v3.23 | squid | 3.5.12-r0, 2.7.6-r8, 0 |
| Alpine:v3.17 | squid | 2.7.6-r2, 3.4.5-r0, 3.4.6-r0 |
| Alpine:v3.11 | squid | 3.2.0.19-r0, 2.7.6-r0, 2.7.6-r10 |
| Alpine:v3.13 | squid | 3.2.0.12-r2, 3.2.0.12-r4, 3.2.0.12-r3 |
| Alpine:v3.20 | squid | 2.7.6-r6, 4.9-r0, 4.8-r1 |
| Alpine:v3.16 | squid | 3.5.14-r1, 3.5.14-r0, 3.5.13-r0 |
| Alpine:v3.14 | squid | 3.5.23-r1, 3.2.0.16-r0, 3.2.0.13-r0 |
| Alpine:v3.22 | squid | 3.4.12-r0, 3.3.5-r0, 3.3.6-r0 |
| Alpine:v3.19 | squid | 3.5.15-r0, 3.5.15-r1, 3.5.16-r0 |
Timeline
- Aug 24, 2020 CVE Published
- Dec 3, 2025 CVE Updated
- Apr 30, 2026 Distribution Patch