SB2024080849 - Multiple vulnerabilities in Avast Antivirus

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Main Vulnerability Database SB2024080849

SB2024080849 - Multiple vulnerabilities in Avast Antivirus

Published: August 8, 2024

Security Bulletin ID SB2024080849
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 4
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 4 vulnerabilities.


1) Link following (CVE-ID: CVE-2024-7227)

CWE-ID: CWE-59 - Improper Link Resolution Before File Access ('Link Following')

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists dye to incorrect handling of symbolic links within the Avast Service (AvastSvc). A local user can create a symbolic link to a critical file on the system and delete it, which can result in privilege escalation.

2) Link following (CVE-ID: CVE-2024-7232)

CWE-ID: CWE-59 - Improper Link Resolution Before File Access ('Link Following')

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists dye to incorrect handling of symbolic links within the Avast Service (AvastSvc). A local user can create a symbolic link to a critical folder on the system and delete it, which can result in privilege escalation.

3) Link following (CVE-ID: CVE-2024-7233)

CWE-ID: CWE-59 - Improper Link Resolution Before File Access ('Link Following')

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists dye to incorrect handling of symbolic links within the Avast Service (AvastSvc). A local user can create a symbolic link to a critical folder on the system and delete it, which can result in privilege escalation.


4) Link following (CVE-ID: CVE-2024-7228)

CWE-ID: CWE-59 - Improper Link Resolution Before File Access ('Link Following')

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists dye to incorrect handling of symbolic links within the Avast Service. A local user can abuse the service to create a folder, which can lead to a denial of service.


Remediation

Install update from vendor's website.

References