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Advisories

Coder before 2.34.2 User Enumeration via Login Placeholder Hash

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Severity
medium
Date
Affecting

  • coder >= 2.34.0, < 2.34.2

  • coder >= 2.33.0, < 2.33.8

  • coder >= 2.30.0, < 2.32.7

  • coder >= 0, < 2.29.17

CWE
  • CWE-203 Observable Discrepancy
CVSS
6.3
CVSS V4 Vector
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Description
Coder before 2.29.17, 2.30.0 before 2.32.7, 2.33.0 before 2.33.8, and 2.34.0 before 2.34.2 contains a user enumeration vulnerability because userpassword.Compare() substitutes a placeholder hash derived from the string "hunter2" when a stored password hash is empty. Unauthenticated attackers can submit logins with the password "hunter2" and distinguish HTTP 403 from 401 responses to enumerate valid accounts and reveal the authentication provider of SSO-only users.

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