Vulnerability in Squid Web Proxy Cache

CVE-2009-0801

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.

Published · last modified .

CVSS v2 metric

CVSS v2 base score 5.4 (Medium). Vector: AV:N/AC:H/Au:N/C:C/I:N/A:N. This CVE predates CVSS v3 and has no v3 score from NVD.

EPSS exploit prediction

EPSS: 0.031 (87.2th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 87.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2009-0801: held from 0.031 to 0.031.

EPSS over last 30 days · oldest: 0.031 · newest: 0.031 · change: 0.000

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2009-0801?
CVE-2009-0801 is a vulnerability in Squid Web Proxy Cache, classified under CWE-264. Published 2009-03-04.
Is CVE-2009-0801 known to be exploited?
9 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.