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CVE-2004-0189

UnknownEPSS 13.81%

Last modified

CVE-2004-0189 is a vulnerability of currently unknown severity. The "%xx" URL decoding function in Squid 2.5STABLE4 and earlier allows remote attackers to bypass url_regex ACLs via a URL with a NULL ("%00") character, which causes Squid to use only a portion of the requested URL when comparing it against the access control lists.. EPSS estimates a 13.81% chance of exploitation in the next 30 days.

Description

The "%xx" URL decoding function in Squid 2.5STABLE4 and earlier allows remote attackers to bypass url_regex ACLs via a URL with a NULL ("%00") character, which causes Squid to use only a portion of the requested URL when comparing it against the access control lists.

Metrics

EPSS Probability
13.81%

96.0th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
SquidSquid2.0_patch2
SquidSquid2.1_patch2
SquidSquid2.3_stable5
SquidSquid2.4
SquidSquid2.4_stable7
SquidSquid2.5_stable3
SquidSquid2.5_stable4

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2004-0189?
The "%xx" URL decoding function in Squid 2.5STABLE4 and earlier allows remote attackers to bypass url_regex ACLs via a URL with a NULL ("%00") character, which causes Squid to use only a portion of the requested URL when comparing it against the access control lists.
How severe is CVE-2004-0189?
Severity scoring for CVE-2004-0189 is pending analysis. The EPSS model estimates a 13.81% probability of exploitation in the next 30 days.
How do I fix CVE-2004-0189?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2004-0189?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST