Avast Premium Security Sandbox Protection Link Following Privilege Escalation Vulnerability
CVE-2023-42125

7.8HIGH

Key Information:

Vendor

Avast

Status
Premium Security
Vendor
CVE Published:
3 May 2024

What is CVE-2023-42125?

A privilege escalation vulnerability exists in the Avast Premium Security Sandbox Protection, where local attackers can exploit a flaw in the implementation of the sandbox feature. By creating a symbolic link, attackers can manipulate the service to generate arbitrary namespace objects. This exploitation allows individuals with low-privileged access to escalate their privileges and execute arbitrary code in the context of the SYSTEM user, posing significant risks to system integrity and security.

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Deploy the Patch

Affected Version(s)

Premium Security Avast Premium Security 22.12.6044 (build 22.12.7758.769)

References

https://www.zerodayinitiative.com/advisories/ZDI-23-1475/
x_research-advisory

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

CVSS V3.0

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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