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CVE-2009-0801

Published: Mar 4, 2009Updated: Apr 23, 2026 Sources: CVE List NVDCWE-264
NVD MITRE
5.4CVSSMEDIUM
EPSS Score
3.1%
Top 14.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

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.

CVSS Vector Breakdown

AV:NAC:HAu:NC:CI:NA:N
Exploitability
AV:NAccess Vector
Network
AC:HAccess Complexity
High
Au:NAuthentication
None
Impact
C:CConfidentiality
Complete
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-264

Affected Products

squid web proxy cachesquid
On-prem
Networking Infrastructure / load-balancer-proxy
n/an/a
squidoss-projectNetworking Infrastructureaka squid web proxy, squid web proxy cache

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

References

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

Timeline

Published
Mar 4, 2009
Last Updated
Apr 23, 2026

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