Denial of Service Vulnerability in Squid Proxy Server by Trusted Peers
CVE-2020-24606

8.6HIGH

Key Information:

Vendor

Squid-cache

Status
Squid
Vendor
CVE Published:
24 August 2020

What is CVE-2020-24606?

A vulnerability in Squid Proxy Server allows a trusted peer to execute Denial of Service attacks by exploiting a flaw in the handling of crafted Cache Digest response messages. When the cache_peer is utilized alongside the cache digests feature, this vulnerability occurs due to improper management of EOF in the peerDigestHandleReply() function, leading to a livelock that consumes all available CPU cycles.

References

https://github.com/squid-cache/squid/security/advisories/...
x_refsource_MISC
http://www.squid-cache.org/Versions/v4/changesets/SQUID-2...
x_refsource_MISC
https://www.debian.org/security/2020/dsa-4751
vendor-advisoryx_refsource_DEBIAN

EPSS Score

6% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
8.6
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.