What’s Vulnerable › Vulnerabilities
CVE-2012-2213
- Severity: medium (CVSS 5.0 v2.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 12.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2012-04-28 · updated 2026-06-16
- Weakness: CWE-264
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
Affected products
- Squid: 3.1.9
References
- http://archives.neohapsis.com/archives/bugtraq/2012-04/0117.html
- http://archives.neohapsis.com/archives/bugtraq/2012-04/0131.html
- http://archives.neohapsis.com/archives/bugtraq/2012-04/0140.html
- http://archives.neohapsis.com/archives/bugtraq/2012-04/0146.html
- http://archives.neohapsis.com/archives/bugtraq/2012-04/0163.html
- http://archives.neohapsis.com/archives/bugtraq/2012-04/0165.html
- http://archives.neohapsis.com/archives/bugtraq/2012-04/0117.html
- http://archives.neohapsis.com/archives/bugtraq/2012-04/0131.html
- http://archives.neohapsis.com/archives/bugtraq/2012-04/0140.html
- http://archives.neohapsis.com/archives/bugtraq/2012-04/0146.html
- http://archives.neohapsis.com/archives/bugtraq/2012-04/0163.html
- http://archives.neohapsis.com/archives/bugtraq/2012-04/0165.html
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