CyberRota Analysis
AI-GeneratedPunk::Plugin::TOTP versions prior to 0.05 for Perl are vulnerable due to a flaw that allows an attacker to reset the second-factor authentication attempt limit by replaying an earlier session cookie, which can lead to unauthorized access through repeated guessing attempts. This vulnerability primarily affects applications that do not implement server-side session storage, as they rely on signed cookies that can be reused before expiration. Organizations using this plugin should prioritize remediation to prevent potential exploitation of the second-factor authentication mechanism.
Original NVD Description
Punk::Plugin::TOTP versions before 0.05 for Perl allow the second-factor attempt limit to be reset by replaying an earlier session cookie because the challenge route counts failures in the session. The POST handler on challenge_path keeps the failure count as tries inside the totp_pending record in the session, raising it on each rejected code and deleting the pending record once it reaches attempts, five by default. Punk::Session carries the session in a signed cookie unless the application declares a store, and keeps no server-side record, so an earlier value of the same session stays valid until the expiry stamped inside it. A client that saves the cookie before its failed attempts and presents it again gets the pending record back with its counter, and the limit never fires. The replayed record is accepted while its own expiry, pending_ttl seconds from the challenge and 300 by default, has not passed. Sessions declared with a store are not affected: the pending record and its counter then live server-side. The attempt limit does not bound guessing of the second factor, which is left to the per-address rate limit the plugin registers on the same path, 30 requests per 60 seconds.