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Advisories

CAT through 3.1.0 Session Cookie Forgery via Unkeyed hashCode Checksum

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severity
critical
date
Affecting

  • cat <= 3.1.0

CWE
  • CWE-565 Reliance on Cookies without Validation and Integrity Checking
CVSS
9.3
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Credit
George Chen
Description
CAT uses Java String.hashCode as the sole integrity check for session cookies without server-side keying, allowing attackers to forge valid checksums offline. Attackers can set the x-forwarded-for header to bypass IP binding validation and create admin sessions with full configuration access.

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