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.
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Wed, 16 Jul 2025 21:15:00 +0000
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Description | 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. | |
Title | Plack-Middleware-Session before version 0.35 for Perl generates session ids insecurely | |
Weaknesses | CWE-338 CWE-340 |
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Status: PUBLISHED
Assigner: CPANSec
Published: 2025-07-16T13:05:03.782Z
Updated: 2025-07-16T20:48:17.516Z
Reserved: 2025-04-16T09:05:34.362Z
Link: CVE-2025-40923

Updated: 2025-07-16T20:48:04.599Z

Status : Awaiting Analysis
Published: 2025-07-16T13:15:23.997
Modified: 2025-07-16T21:15:27.757
Link: CVE-2025-40923

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