CVE-2020-15598

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Trustwave ModSecurity 3.x through 3.0.4 allows denial of service via a special request. NOTE: The discoverer reports "Trustwave has signaled they are disputing our claims." The CVE suggests that there is a security issue with how ModSecurity handles regular expressions that can result in a Denial of Service condition. The vendor does not consider this as a security issue because1) there is no default configuration issue here. An attacker would need to know that a rule using a potentially problematic regular expression was in place, 2) the attacker would need to know the basic nature of the regular expression itself to exploit any resource issues. It's well known that regular expression usage can be taxing on system resources regardless of the use case. It is up to the administrator to decide on when it is appropriate to trade resources for potential security benefit

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ModSecurity 安全漏洞

ModSecurity是一个入侵检测、阻止的引擎可以作为Apache Web服务器的一个模块或单独的应用程序来运行，为增强Web应用程序的安全性和保护Web应用程序避免遭受来自已知与未知的攻击。 Trustwave ModSecurity 3.x 系列至3.0.4版本存在安全漏洞，攻击者借助该漏洞可以触发拒绝服务。

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