CVE-2023-42125 — HIGH (7.8)

Vulnerability Description

Avast Premium Security Sandbox Protection Link Following Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Avast Premium Security. 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 implementation of the sandbox feature. By creating a symbolic link, an attacker can abuse the service to create arbitrary namespace objects. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM. . Was ZDI-CAN-20383.

CVSS Score

7.8

HIGH

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Avast	Premium Security	22.12.6044

Related Weaknesses (CWE)

CWE-59 CWE-706

References

https://www.zerodayinitiative.com/advisories/ZDI-23-1475/Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-23-1475/Third Party Advisory

FAQ

What is CVE-2023-42125?

CVE-2023-42125 is a vulnerability with a CVSS score of 7.8 (HIGH). Avast Premium Security Sandbox Protection Link Following Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Avast Premium...

How severe is CVE-2023-42125?

CVE-2023-42125 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2023-42125?

Check the references section above for vendor advisories and patch information. Affected products include: Avast Premium Security.