CVE-2012-2213
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
Key facts
- CVSS score
- 5.0 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:N/AC:L/Au:N/C:P/I:N/A:N- Weakness (CWE)
- CWE-264
- EPSS score
- 12.2% (96th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2012-2207)
- Published
- April 28, 2012
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2012-2207 in the EU Vulnerability Database. Last updated in EUVD on September 16, 2024.
View on the EU Vulnerability DatabaseAffected products
- squid-cache / squid
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
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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