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CVE-2020-24606

Date: August 24, 2020

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.

Language: C++

Severity Score

Related Resources (23)

https://usn.ubuntu.com/4551-1/
https://nvd.nist.gov/vuln/detail/CVE-2020-24606
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BE6FKUN7IGTIR2MEEMWYDT7N5EJJLZI2/
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00017.html
https://security.alpinelinux.org/vuln/CVE-2020-24606
https://www.debian.org/security/2020/dsa-4751
https://security.netapp.com/advisory/ntap-20210219-0007/
https://people.canonical.com/~ubuntu-security/cve/CVE-2020-24606
https://access.redhat.com/security/cve/CVE-2020-24606
https://security-tracker.debian.org/tracker/CVE-2020-24606
https://lists.debian.org/debian-lts-announce/2020/10/msg00005.html
https://usn.ubuntu.com/4477-1/
http://www.squid-cache.org/Versions/v4/changesets/SQUID-2020_9.patch
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BMTFLVB7GLRF2CKGFPZ4G4R5DIIPHWI3/
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00012.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HJJDI7JQFGQLVNCKMVY64LAFMKERAOK7/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BE6FKUN7IGTIR2MEEMWYDT7N5EJJLZI2/
https://github.com/squid-cache/squid/security/advisories/GHSA-vvj7-xjgq-g2jg
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HJJDI7JQFGQLVNCKMVY64LAFMKERAOK7/
https://security.netapp.com/advisory/ntap-20210226-0007/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BMTFLVB7GLRF2CKGFPZ4G4R5DIIPHWI3/
https://security.netapp.com/advisory/ntap-20210226-0006/
https://www.mend.io/vulnerability-database/CVE-2020-24606

Severity Score

Weakness Type (CWE)

Improper Input Validation

CWE-20

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): CHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): COMPLETE
Additional information:

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