CVE-2024-7236: avg antivirus Link Following

Vulnerability summary

CVE-2024-7236 is a medium (CVSS 5.5) Link Following vulnerability in avg antivirus. EPSS estimates a 0.27% chance of exploitation in the next 30 days, higher than 17.7% of scored vulnerabilities.

Timeline

1. 22-11-2024
   PublishedVulnerability first disclosed.
2. 23-11-2024
   Last modifiedVulnerability information updated.

Description

AVG AntiVirus Free icarus Arbitrary File Creation Denial of Service Vulnerability. This vulnerability allows local attackers to create a denial-of-service condition on affected installations of AVG AntiVirus Free. 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 AVG Installer. By creating a symbolic link, an attacker can abuse the update functionality to create a file. An attacker can leverage this vulnerability to create a persistent denial-of-service condition on the system. Was ZDI-CAN-22942.

• CWE-59Improper Link Resolution Before File Access ('Link Following')The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.