pySCG investigate on creating CWE-91 Prevent XML injection

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难度
4/5
预计耗时
3-5 天
新手友好度
48/100
Issue 类型
文档
描述清晰度
基本清楚
活跃度
活跃
技术栈
python, xml

调研方向

Read the CWE-472 HTML rule and the linked CVE descriptions for examples that could fit a CWE-91 rule. The issue highlights example length and dependencies outside Python’s standard library as constraints. Done means providing a suitable XML injection example and guidance for the rule; the issue does not name a file or test to start from.

由索引模型根据 Issue 内容生成。

描述

Missing code examples that are suitable in terms of length and need to install additional modules.

XML as such is similar to html not python but we do have rule's on html such as CWE-472.
Challenging to avoid using a module from outside of the standard lib in the code examples.

CVEs that could lead to an alternative code example (CWE-91):

CVE-2021-36359 (nist.gov)
CVE-2018-1000632 (nist.gov)
CVE-2022-46751 (nist.gov)
Its mostly an issue due to disabling of a DTD or lack of using one and lack of input sanitation. Subsequently an attacker has a greater choice in how the xml is arranged. Input sanitation can furthermore limit the attack vector.

主要语言
Python
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