Advisories

Tinyproxy - Stathost Detection Bypass via Host Header Manipulation

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Severity
high
Date
Affecting
  • Tinyproxy <= 1.11.3, fixed in commit 09312a1

CWE
  • CWE-290 Authentication Bypass by Spoofing
CVSS
8.8
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
Credit
Internal Finding
Description
Tinyproxy through 1.11.3, fixed in commit 09312a1, fails to properly validate the Host header during stathost detection, allowing unauthenticated attackers to access the stats page by injecting a matching Host header or bypass detection via port manipulation. Remote attackers can trigger unauthorized access to internal proxy statistics or misroute requests as transparent proxy connections to circumvent access controls.

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