Vulnerability · Published Nov 22, 2024 · Assigned by zdi

CVE-2024-7228Avast Free Antivirus Link Following Denial-of-Service Vulnerability

Medium 6.1

In plain English

A medium-severity security flaw in Free Antivirus 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)6.1Medium

Exploit odds (30 days)0.3%top 76.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Avast Free Antivirus Link Following Denial-of-Service Vulnerability. This vulnerability allows local attackers to create a denial-of-service condition on affected installations of Avast Free Antivirus. 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 Avast Service. By creating a symbolic link, an attacker can abuse the service to create a folder. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-22806.

Affected products (as reported)

Vendor	Product	Versions
Avast	Free Antivirus	23.11.6090 Build 23.11.8365.809

Weakness: CWE-59 · Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H

References

ZDI-24-999 x_research-advisory