php-svg-lib possible DoS caused by infinite recursion when parsing SVG document

php-svg-lib is an SVG file parsing / rendering library. Prior to version 0.5.1, when parsing the attributes passed to a `use` tag inside an svg document, an attacker can cause the system to go to an infinite recursion. Depending on the system configuration and attack pattern this could exhaust the memory available to the executing process and/or to the server itself. An attacker sending multiple request to a system to render the above payload can potentially cause resource exhaustion to the point that the system is unable to handle incoming request. Version 0.5.1 contains a patch for this issue.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

未经控制的递归

php-svg-lib 安全漏洞

php-svg-lib是dompdf开源的一个 SVG 文件解析/渲染库。 php-svg-lib 0.5.1 之前版本存在安全漏洞，该漏洞源于当解析传递给 svg 文档内的 use标签的属性时，可能会导致系统进入无限递归，耗尽可用的内存。

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