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I. Basic Information for CVE-2021-40524
Vulnerability Information

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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
In Pure-FTPd before 1.0.50, an incorrect max_filesize quota mechanism in the server allows attackers to upload files of unbounded size, which may lead to denial of service or a server hang. This occurs because a certain greater-than-zero test does not anticipate an initial -1 value. (Versions 1.0.23 through 1.0.49 are affected.)
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
Pure-FTPd 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Pure-FTPd是一款FTP(文件传输协议)服务器。 jedisct1 Pure-FTPd 存在代码问题漏洞,该漏洞源于 Pure-FTPd 1.0.49 版本中,服务器中错误的 max_filesize 配额机制允许攻击者上传无限大小的文件,这可能导致拒绝服务或服务器挂起。发生这种情况是因为某个大于零的测试存在未预期初始值 -1。
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-2021-40524
#POC DescriptionSource LinkShenlong Link
1Pure-FTPd versions 1.0.23 through 1.0.49 contain an arbitrary file upload vulnerability due to max_filesize quota issue, allowing large or unbounded file uploads that can cause server hang or resource exhaustion. https://github.com/projectdiscovery/nuclei-templates/blob/main/network/cves/2021/CVE-2021-40524.yamlPOC Details
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III. Intelligence Information for CVE-2021-40524
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IV. Related Vulnerabilities
V. Comments for CVE-2021-40524

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