Vulnerability Details : CVE-2020-24606

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.
Published 2020-08-24 18:15:10
Updated 2021-07-21 11:39:24
Source MITRE
View at NVD,   CVE.org
Vulnerability category: Denial of service

Products affected by CVE-2020-24606

Threat overview for CVE-2020-24606

Top countries where our scanners detected CVE-2020-24606
Top open port discovered on systems with this issue 3128
IPs affected by CVE-2020-24606 2,470,853
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2020-24606!
*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2020-24606

EPSS FAQ
2.38%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 90 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2020-24606

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
7.1
 HIGH AV:N/AC:M/Au:N/C:N/I:N/A:C
8.6
6.9
 NIST
8.6
 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
3.9
4.0
 MITRE
7.5
 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.9
3.6
 NIST

CWE ids for CVE-2020-24606

  • The product does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2020-24606

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