CVE-2025-40923
Plack-Middleware-Session before version 0.35 for Perl generates session ids insecurely.
The default session id generator returns a SHA-1 hash seeded with the built-in rand function, the epoch time, and the PID. The PID will come from a small set of numbers, and the epoch time may be guessed, if it is not leaked from the HTTP Date header. The built-in rand function is unsuitable for cryptographic usage.
Predicable session ids could allow an attacker to gain access to systems.
The default session id generator returns a SHA-1 hash seeded with the built-in rand function, the epoch time, and the PID. The PID will come from a small set of numbers, and the epoch time may be guessed, if it is not leaked from the HTTP Date header. The built-in rand function is unsuitable for cryptographic usage.
Predicable session ids could allow an attacker to gain access to systems.
Vendor
-
Product
-
CWE
Yayın Tarihi
2025-07-16 13:15:23
Güncelleme
2025-11-04 22:16:12
Source Identifier
9b29abf9-4ab0-4765-b253-1875cd9b441e
KEV Date Added
-
Kategoriler
Referanslar
https://github.com/plack/Plack-Middleware-Session/commit/1fbfbb355e34e7f4b3906f66cf958cedadd2b9be.patch
https://github.com/plack/Plack-Middleware-Session/pull/52
https://metacpan.org/release/MIYAGAWA/Plack-Middleware-Session-0.34/source/lib/Plack/Session/State.pm#L22
https://security.metacpan.org/docs/guides/random-data-for-security.html
http://www.openwall.com/lists/oss-security/2025/07/16/4