CyberRota Analysis
AI-GeneratedA vulnerability in AshAuthentication's OAuth2 implementation allows an attacker to exploit insufficient session expiration by replaying a victim's OAuth2 state value, potentially signing them into a malicious account. This flaw affects versions of ash_authentication from 0.6.0 to 4.15.0 and from 5.0.0-rc.0 to 5.0.0-rc.14. Organizations utilizing affected versions should prioritize remediation to mitigate the risk of unauthorized account access.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
Insufficient Session Expiration vulnerability in team-alembic AshAuthentication allows an attacker who obtains a victim's OAuth2 state value to replay the callback and sign that victim into an attacker-controlled account. AshAuthentication.Strategy.OAuth2.Plug.callback/2 clears the stored session_params through a rebinding step inside its with chain, conn <- delete_session(conn, session_key). Elixir evaluates the else block in the scope enclosing the with, so every failure path (the provider returning ?error=access_denied, an invalid code, a token-exchange error, or a registration or sign-in failure) reaches store_authentication_result/2 holding the original connection and the session entry is never removed. The value the module's own comment describes as protection against a CSRF-related attack is therefore consumed only when authentication succeeds, and survives a cancelled or failed attempt until the next request phase or session expiry. This issue affects ash_authentication: from 0.6.0 before 4.15.0 and from 5.0.0-rc.0 before 5.0.0-rc.14.