CVE-2012-2213

critical

Description

Squid 3.1.9 allows remote attackers to bypass the access configuration for the CONNECT method by providing an arbitrary allowed hostname in the Host HTTP header. NOTE: this issue might not be reproducible, because the researcher is unable to provide a squid.conf file for a vulnerable system, and the observed behavior is consistent with a squid.conf file that was (perhaps inadvertently) designed to allow access based on a "req_header Host" acl regex that matches www.uol.com.br

References

http://archives.neohapsis.com/archives/bugtraq/2012-04/0165.html

http://archives.neohapsis.com/archives/bugtraq/2012-04/0163.html

http://archives.neohapsis.com/archives/bugtraq/2012-04/0146.html

http://archives.neohapsis.com/archives/bugtraq/2012-04/0140.html

http://archives.neohapsis.com/archives/bugtraq/2012-04/0131.html

http://archives.neohapsis.com/archives/bugtraq/2012-04/0117.html

Details

Source: Mitre, NVD

Published: 2012-04-28

Updated: 2026-06-16

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N

Severity: Medium

CVSS v3

Base Score: 9.1

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Severity: Critical

EPSS

EPSS: 0.04943