Is CVE-2020-24606 actively exploited?

CVE-2020-24606 has no public evidence of in-the-wild exploitation as of 2024-11-21.

What is the CVSS score for CVE-2020-24606?

CVE-2020-24606 has a CVSS score of 8.6 (HIGH severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.

How do I patch CVE-2020-24606?

Patch guidance is available from squid-cache security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2020-24606.

Fix CVE-2020-24606 - HIGH squid-cache squid

Q: Which products are affected by CVE-2020-24606?

12 products: squid-cache squid, squid-cache squid, canonical ubuntu linux, canonical ubuntu linux, canonical ubuntu linux, and 7 more.

Description

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.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: changed
Confidentiality: none
Integrity: none
Availability: high
Weaknesses: CWE-667

Metadata

Primary Vendor: SQUID-CACHE
Published: 8/24/2020
Last Modified: 11/21/2024
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

squid-cache : squidsquid-cache : squidcanonical : ubuntu_linuxcanonical : ubuntu_linuxcanonical : ubuntu_linuxdebian : debian_linuxdebian : debian_linuxfedoraproject : fedorafedoraproject : fedorafedoraproject : fedoraopensuse : leapopensuse : leap

Remediation Guidance

Executive Summary

Cite this page

CVE-2020-24606. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2020-24606

View on NIST NVD

CVE-2020-24606 vulnerability