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Advisories

Parse Server 9.0.0 before 9.10.7-alpha.1 ReDoS via Email Validation Regex

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Severity
high
Date
Affecting

  • parse-server >= 9.0.0, < 9.10.7-alpha.1

  • parse-server >= 0, < 8.6.115

CWE
  • CWE-1333 Inefficient Regular Expression Complexity
CVSS
8.7
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Credit
0xma1ware, mtrezza
Description
Parse Server before 8.6.115 and 9.0.0 before 9.10.7-alpha.1 validates user email address format with a regular expression whose run time grows quadratically with input length and that is applied without a length limit. An unauthenticated attacker who knows the application ID can send a sign-up request, or a logged-in user can update their own email, with a long crafted email address to block the Node.js event loop and deny service to all clients.

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