漏洞信息
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Vulnerability Title
Rack QueryParser has an unsafe default allowing params_limit bypass via semicolon-separated parameters
Vulnerability Description
Rack is a modular Ruby web server interface. Prior to version 2.2.18, Rack::QueryParser enforces its params_limit only for parameters separated by &, while still splitting on both & and ;. As a result, attackers could use ; separators to bypass the parameter count limit and submit more parameters than intended. Applications or middleware that directly invoke Rack::QueryParser with its default configuration (no explicit delimiter) could be exposed to increased CPU and memory consumption. This can be abused as a limited denial-of-service vector. This issue has been patched in version 2.2.18.
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Vulnerability Title
Rack 安全漏洞
Vulnerability Description
Rack是Rack开源的一个模块化的Ruby web服务器界面。 Rack 2.2.18之前版本存在安全漏洞,该漏洞源于Rack::QueryParser仅对使用&分隔的参数强制执行params_limit限制,但仍同时接受&和;作为分隔符,攻击者可利用;分隔符绕过参数数量限制,可能导致CPU和内存消耗增加。
CVSS Information
N/A
Vulnerability Type
N/A