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CVE-2019-12523

Description

An issue was discovered in Squid before 4.9. When handling a URN request, a corresponding HTTP request is made. This HTTP request doesn't go through the access checks that incoming HTTP requests go through. This causes all access checks to be bypassed and allows access to restricted HTTP servers, e.g., an attacker can connect to HTTP servers that only listen on localhost.


Affected Software


CPE Name Name Version
squid-cache:squid squid-cache squid 3.5.28
squid-cache:squid squid-cache squid 4.8
canonical:ubuntu_linux canonical ubuntu linux 16.04
canonical:ubuntu_linux canonical ubuntu linux 18.04
canonical:ubuntu_linux canonical ubuntu linux 19.04
canonical:ubuntu_linux canonical ubuntu linux 19.10
fedoraproject:fedora fedoraproject fedora 30
fedoraproject:fedora fedoraproject fedora 31
opensuse:leap opensuse leap 15.0

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