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I. Basic Information for CVE-2021-29433
Vulnerability Information

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Vulnerability Title
Denial of service (via resource exhaustion) due to improper input validation
Source: NVD (National Vulnerability Database)
Vulnerability Description
Sydent is a reference Matrix identity server. In Sydent versions 2.2.0 and prior, sissing input validation of some parameters on the endpoints used to confirm third-party identifiers could cause excessive use of disk space and memory leading to resource exhaustion. A patch for the vulnerability is in version 2.3.0. No workarounds are known to exist.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
输入验证不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Matrix Sydent 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Matrix Sydent是英国Matrix基金会的一款Matrix身份验证服务器API的实现。 Matrix Sydent 存在输入验证错误漏洞,该漏洞源于缺少对某些参数的输入验证可能会导致磁盘空间和内存的过度使用,从而导致资源耗尽。
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
matrix-orgsydent <= 2.2.0 -
II. Public POCs for CVE-2021-29433
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III. Intelligence Information for CVE-2021-29433
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