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Advisories

Vvveb before 1.0.9.0 Cookie Forgery via PHP Type Juggling in generateCookie()

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Severity
critical
Date
Affecting

  • Vvveb >= 0, < 1.0.9.0

CWE
  • CWE-287 Improper Authentication
CVSS
9.2
CVSS V4 Vector
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Credit
andy21190
Description
Vvveb before 1.0.9.0 contains an authentication bypass vulnerability in generateCookie() in system/user/user.php that uses loose comparison to validate MD5 cookie hashes. Unauthenticated attackers can brute-force cookie values until the server's MD5 computation yields a 0e magic hash, then forge persistent cookies for account takeover.

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