CVE-2025-15604— Amon2 安全漏洞

Amon2 versions before 6.17 for Perl use an insecure random_string implementation for security functions

Amon2 versions before 6.17 for Perl use an insecure random_string implementation for security functions. In versions 6.06 through 6.16, the random_string function will attempt to read bytes from the /dev/urandom device, but if that is unavailable then it generates bytes by concatenating a SHA-1 hash seeded with the built-in rand() function, the PID, and the high resolution epoch time. 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. Before version 6.06, there was no fallback when /dev/urandom was not available. Before version 6.04, the random_string function used the built-in rand() function to generate a mixed-case alphanumeric string. This function may be used for generating session ids, generating secrets for signing or encrypting cookie session data and generating tokens used for Cross Site Request Forgery (CSRF) protection.

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可预测问题

Amon2 安全漏洞

Amon2是Tokuhiro Matsuno个人开发者的一个轻量级Web应用开发框架。 Amon2 6.17之前版本存在安全漏洞，该漏洞源于random_string实现不安全，可能导致生成不安全的会话ID、秘密或令牌。

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