Vulnerability · Published May 3, 2024 · Assigned by zdi

CVE-2023-42124Avast Premium Security Sandbox Protection Incorrect Authorization Privilege Escalation Vulnerability

Medium 5.3

In plain English

A medium-severity incorrect authorization in Premium Security from Avast. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities).

Severity (CVSS 3.0)5.3Medium

Exploit odds (30 days)0.3%top 76.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Avast Premium Security Sandbox Protection Incorrect Authorization 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. The issue results from incorrect authorization. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code outside the sandbox at medium integrity. . Was ZDI-CAN-20178.

Affected products (as reported)

Vendor	Product	Versions
Avast	Premium Security	Avast Premium Security 22.12.6044 (build 22.12.7758.769)

Weakness: CWE-863 · Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

References

ZDI-23-1474 x_research-advisory