CVE-2009-0801

Severity: medium (CVSS 5.4 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2009-03-04 · updated 2026-06-16
Weakness: CWE-264

Description

Squid, when transparent interception mode is enabled, uses the HTTP Host header to determine the remote endpoint, which allows remote attackers to bypass access controls for Flash, Java, Silverlight, and probably other technologies, and possibly communicate with restricted intranet sites, via a crafted web page that causes a client to send HTTP requests with a modified Host header.

Affected products

Squid Web Proxy Cache: 2.7, 2.7.stable5, 2.7.stable6, 3.0, 3.0_pre1, 3.0_pre2 (+10)

References

http://www.kb.cert.org/vuls/id/435052
http://www.securityfocus.com/bid/33858
http://www.kb.cert.org/vuls/id/435052
http://www.securityfocus.com/bid/33858

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