SB2021062803 - Multiple vulnerabilities in ownCloud files_antivirus

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) OS Command Injection (CVE-ID: CVE-2021-33827)

The vulnerability allows a remote user to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation in the administration settings. A remote administrator can pass specially crafted data to the application and execute arbitrary OS commands on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

2) Incomplete cleanup (CVE-ID: CVE-2021-33828)

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to an incomplete cleanup. A remote authenticated attacker can upload malicious files to a public share.

Remediation

Install update from vendor's website.

References

• https://owncloud.com/security-advisories/cve-2021-33827/
• https://owncloud.com/security-advisories/cve-2021-33828/