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Advisories

CFNext before 3.1.0 Admin Password Recovery via MD5-Derived Subscription UUID

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Severity
high
Date
Affecting

  • CFNext >= 0, < 3.1.0

CWE
  • CWE-760 Use of a One-Way Hash with a Predictable Salt
CVSS
7.7
CVSS V4 Vector
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Credit
George Chen
Description
CFNext before 3.1.0 contains a weak cryptographic derivation vulnerability that allows subscription link holders to recover the admin password because the subscription UUID is an MD5 of the password with a fixed public salt. Attackers can brute-force the password offline without rate limiting, log into the admin panel, and read stored Trojan, Clash, Telegram and Cloudflare API secrets.

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