CyberRota Analysis
AI-GeneratedThe vulnerability in ash_authentication allows an attacker to exploit a flaw in the remember-me cookie functionality, enabling them to hijack a victim's authenticated session by planting a malicious cookie in their browser. This critical authentication bypass can lead to unauthorized access to sensitive data and actions under the victim's account. Organizations using affected versions of ash_authentication (4.10.0 to 4.15.0 and 5.0.0-rc.0 to 5.0.0-rc.14) should prioritize patching this vulnerability to mitigate the risk of account takeover.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
Authentication Bypass by Spoofing vulnerability in team-alembic ash_authentication allows an attacker who can plant a remember-me cookie in a victim's browser to replace that victim's authenticated session with one for the attacker's own account. AshAuthentication.Plug.Helpers.sign_in_using_remember_me/3 skips re-authenticating an already-signed-in visitor by checking the session for "<subject_name>_token", but store_in_session/2 writes that key only when require_token_presence_for_authentication? is enabled and otherwise writes the bare subject name. At the default setting the guard therefore reads a key that is never written, its already-signed-in branch is unreachable, and the remember-me sign-in runs on every request through the per-request browser pipeline plug. A planted remember-me cookie is consequently honoured even for a visitor holding a live authenticated session, so whatever the victim enters afterwards lands in data the attacker controls. The read path in authenticate_resource_from_session/4 selects the key correctly, so the guard and the reader disagree about which key holds the session. This issue affects ash_authentication: from 4.10.0 before 4.15.0 and from 5.0.0-rc.0 before 5.0.0-rc.14.