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CVE-2019-17190

EPSS 0.12% · P31
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I. Basic Information for CVE-2019-17190

Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
A Local Privilege Escalation issue was discovered in Avast Secure Browser 76.0.1659.101. The vulnerability is due to an insecure ACL set by the AvastBrowserUpdate.exe (which is running as NT AUTHORITY\SYSTEM) when AvastSecureBrowser.exe checks for new updates. When the update check is triggered, the elevated process cleans the ACL of the Update.ini file in %PROGRAMDATA%\Avast Software\Browser\Update\ and sets all privileges to group Everyone. Because any low-privileged user can create, delete, or modify the Update.ini file stored in this location, an attacker with low privileges can create a hard link named Update.ini in this folder, and make it point to a file writable by NT AUTHORITY\SYSTEM. Once AvastBrowserUpdate.exe is triggered by the update check functionality, the DACL is set to a misconfigured value on the crafted Update.ini and, consequently, to the target file that was previously not writable by the low-privileged attacker.
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
Avast Secure Browser 注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Avast Secure Browser 76.0.1659.101版本中存在安全漏洞，该漏洞源于AvastBrowserUpdate.exe文件所设置的ACL并不安全。攻击者可通过在%PROGRAMDATA%Avast SoftwareBrowserUpdate目录下创建名称为Update.ini的硬链接利用该漏洞获得权限。
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

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II. Public POCs for CVE-2019-17190

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III. Intelligence Information for CVE-2019-17190

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Same Patch Batch · n/a · 2020-01-27 · 75 CVEs total

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CVE-2019-19823TotoLink A3002RU 安全漏洞
CVE-2013-4770Eucalyptus Management Console 跨站脚本漏洞
CVE-2013-7390ZOHO ManageEngine DesktopCentral 代码问题漏洞

Showing top 20 of 75 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

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Same vendor: n/a

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