CVE-2021-41611

High

Description

An issue was discovered in Squid 5.0.6 through 5.1.x before 5.2. When validating an origin server or peer certificate, Squid may incorrectly classify certain certificates as trusted. This problem allows a remote server to obtain security trust well improperly. This indication of trust may be passed along to clients, allowing access to unsafe or hijacked services.

SeverityHigh

CVSS7.5

Exploit probability—

Product

Squid

PublishedOct 18, 2021

First seenOct 18, 2021

How to fix

Update

squid-cache squid5.2 or later

Vendor advisories

lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CWQ2WKDWTSO47S3F6XJJ6HGG2ULWEAE4/

Affected products

Product	Affected versions	Fixed in
squid-cache squid	5.0.6 ≤ v < 5.2	5.2
fedoraproject fedora	35	—

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