CVE-2026-2439
CriticalSummary
Wersje Concierge::Sessions od 0.8.1 do 0.8.5 dla Perla generują niebezpieczne identyfikatory sesji. Funkcja generate_session_id w Concierge::Sessions::Base domyślnie używa polecenia uuidgen do generowania UUID, z możliwością użycia wbudowanej funkcji rand w Perlu jako zapasowej metody, co nie zapewnia bezpieczeństwa.
Risk Assessment
Atakujący mogą zgadywać identyfikatory sesji, co może prowadzić do nieautoryzowanego dostępu do systemów. Brak ostrzeżeń w przypadku niepowodzenia uuidgen oraz przewidywalność funkcji rand zwiększają ryzyko.
Recommendation
Zaleca się aktualizację do wersji Concierge::Sessions 0.8.5 lub nowszej, aby zapewnić bezpieczne generowanie identyfikatorów sesji. Dodatkowo, warto rozważyć implementację silniejszych metod generowania losowych identyfikatorów.
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Original NVD description (English source)
Concierge::Sessions versions from 0.8.1 before 0.8.5 for Perl generate insecure session ids. The generate_session_id function in Concierge::Sessions::Base defaults to using the uuidgen command to generate a UUID, with a fallback to using Perl's built-in rand function. Neither of these methods are secure, and attackers are able to guess session_ids that can grant them access to systems. Specifically, * There is no warning when uuidgen fails. The software can be quietly using the fallback rand() function with no warnings if the command fails for any reason. * The uuidgen command will generate a time-based UUID if the system does not have a high-quality random number source, because the call does not explicitly specify the --random option. Note that the system time is shared in HTTP responses. * UUIDs are identifiers whose mere possession grants access, as per RFC 9562. * The output of the built-in rand() function is predictable and unsuitable for security applications.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS