Vulnerability Information
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Vulnerability Title
Zip Slip Vulnerability in nltk/nltk Leading to Remote Code Execution
Vulnerability Description
A critical vulnerability exists in the NLTK downloader component of nltk/nltk, affecting all versions. The _unzip_iter function in nltk/downloader.py uses zipfile.extractall() without performing path validation or security checks. This allows attackers to craft malicious zip packages that, when downloaded and extracted by NLTK, can execute arbitrary code. The vulnerability arises because NLTK assumes all downloaded packages are trusted and extracts them without validation. If a malicious package contains Python files, such as __init__.py, these files are executed automatically upon import, leading to remote code execution. This issue can result in full system compromise, including file system access, network access, and potential persistence mechanisms.
CVSS Information
N/A
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Vulnerability Title
NLTK 安全漏洞
Vulnerability Description
NLTK是NLTK开源的一个自然语言工具包。用于支持自然语言处理的研究和开发。 NLTK存在安全漏洞，该漏洞源于_unzip_iter函数使用zipfile.extractall()而未执行路径验证或安全检查，可能导致攻击者通过特制zip包执行任意代码。
CVSS Information
N/A
Vulnerability Type
N/A