Multiple vulnerabilities in ownCloud files_antivirus

Published: 2021-06-28

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2021-33827 CVE-2021-33828
CWE-ID	CWE-78 CWE-459
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	files_antivirus Client/Desktop applications / Antivirus software/Personal firewalls
Vendor

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) OS Command Injection

EUVDB-ID: #VU54406

Risk: Low

CVSSv3.1: 7.9 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-33827

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Exploit availability: No

Description

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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

files_antivirus: before 1.0.0

External links

http://owncloud.com/security-advisories/cve-2021-33827/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Incomplete cleanup

EUVDB-ID: #VU54407

Risk: Medium

CVSSv3.1: 5.5 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-33828

CWE-ID: CWE-459 - Incomplete cleanup