Denial of service in Citrix License Server

1) Denial of service

EUVDB-ID: #VU973

Risk: Medium

CVSSv3.1: 7.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-6273

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote unauthenticated user to cause DoS conditions on the target system.
The weakness occurs in Citrix Licence Server and exists due to access control error that allow attackers to trigger the affected server to crash.
Successful exploitation of the vulnerability results in denial of service on the vulnerable system.

Mitigation

Update to version 11.14.0.1 or later.
https://www.citrix.com/downloads/licensing/license-server/license-server-version-111401-for-windows.html#ctx-dl-eula

Vulnerable software versions

Citrix License Server: 11.5 - 11.13.1

External links

http://support.citrix.com/article/CTX217430

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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