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I. Basic Information for CVE-2021-33564
Vulnerability Information

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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
An argument injection vulnerability in the Dragonfly gem before 1.4.0 for Ruby allows remote attackers to read and write to arbitrary files via a crafted URL when the verify_url option is disabled. This may lead to code execution. The problem occurs because the generate and process features mishandle use of the ImageMagick convert utility.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Ruby 参数注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Ruby是松本行弘个人开发者的一种跨平台、面向对象的动态类型编程语言。 Ruby 1.4.0版本之前存在参数注入漏洞,该漏洞源于Ruby的Dragonfly gem中存在一个参数注入漏洞,当验证URL选项被禁用时,远程攻击者利用该漏洞可以通过一个精心制作的URL读取和写入任意文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
-n/a n/a -
II. Public POCs for CVE-2021-33564
#POC DescriptionSource LinkShenlong Link
1Argument Injection in Dragonfly Ruby Gemhttps://github.com/mlr0p/CVE-2021-33564POC Details
2Argument Injection in Dragonfly Ruby Gem exploit (backup)https://github.com/dorkerdevil/CVE-2021-33564POC Details
3Ruby Dragonfly before 1.4.0 contains an argument injection vulnerability that allows remote attackers to read and write to arbitrary files via a crafted URL when the verify_url option is disabled. This may lead to code execution. The problem occurs because the generate and process features mishandle use of the ImageMagick convert utility.https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-33564.yamlPOC Details
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III. Intelligence Information for CVE-2021-33564
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IV. Related Vulnerabilities
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