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I. Basic Information for CVE-2021-3838
Vulnerability Information

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Vulnerability Title
PHAR Deserialization in dompdf/dompdf
Source: NVD (National Vulnerability Database)
Vulnerability Description
DomPDF before version 2.0.0 is vulnerable to PHAR deserialization due to a lack of checking on the protocol before passing it into the file_get_contents() function. An attacker who can upload files of any type to the server can pass in the phar:// protocol to unserialize the uploaded file and instantiate arbitrary PHP objects. This can lead to remote code execution, especially when DOMPdf is used with frameworks with documented POP chains like Laravel or vulnerable developer code.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
可信数据的反序列化
Source: NVD (National Vulnerability Database)
Vulnerability Title
Dompdf 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Dompdf是一个 HTML 到 PDF 的转换器。 Dompdf 存在安全漏洞,该漏洞源于容易受到使用反序列化不受信任数据的影响。
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
dompdfdompdf/dompdf unspecified ~ 2.0.0 -
II. Public POCs for CVE-2021-3838
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III. Intelligence Information for CVE-2021-3838
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