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I. Basic Information for CVE-2021-27241
Vulnerability Information

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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
This vulnerability allows local attackers to delete arbitrary directories on affected installations of Avast Premium Security 20.8.2429 (Build 20.8.5653.561). An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the AvastSvc.exe module. By creating a directory junction, an attacker can abuse the service to delete a directory. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-12082.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
在文件访问前对链接解析不恰当(链接跟随)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Avast Premium Security 后置链接漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Avast Premium Security是捷克Avast公司的一个应用软件。用于全面扫描网站漏洞。 Avast Premium Security 20.8.2429 存在安全漏洞,攻击者可利用该漏洞可以滥用该服务来删除目录。
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
AvastPremium Security 20.8.2429 (Build 20.8.5653.561) -
II. Public POCs for CVE-2021-27241
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III. Intelligence Information for CVE-2021-27241
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IV. Related Vulnerabilities
V. Comments for CVE-2021-27241

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