Privilege escalation in oVirt Virtual Desktop Server Manager

1) Command injection

EUVDB-ID: #VU17772

Risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H/E:U/U:Clear]

CVE-ID: CVE-2019-3831

CWE-ID: CWE-77 - Command injection

Exploit availability: No

Description

The vulnerability allows a local high-privileged attacker to execute arbitrary code on the target system.

The vulnerability exists due to exposure of exposed a systemd_run() function to the vdsm system use. A local attacker can inject arbitrary commands and execute arbitrary code with elevated privileges.

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

Mitigation

Update to version 4.30.9.

Vulnerable software versions

Virtual Desktop Server Manager: 4.19.1 - 4.30.8

CPE2.3

• cpe:2.3:a:ovirt:virtual_desktop_server_manager:4.19.1:*:*:*:*:*:*:*
• cpe:2.3:a:ovirt:virtual_desktop_server_manager:4.19.2:*:*:*:*:*:*:*
• cpe:2.3:a:ovirt:virtual_desktop_server_manager:4.19.3:*:*:*:*:*:*:*

External links

https://gerrit.ovirt.org/#/c/97737/
https://bugzilla.redhat.com/show_bug.cgi?id=1677108

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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