Session hijacking in Citrix NetScaler

1) Session hijacking

EUVDB-ID: #VU1136

Risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-9028

CWE-ID: CWE-592 - Authentication Bypass Issues

Exploit availability: No

Description

The vulnerability allows a remote unauthenticated user to hijack the target user's session.
The weakness is due to unathorized redirect in the AAA for Traffic Management (AAA-TM) flow that allows a remote attackers to gain the session cookies and hijack the valid user's session.
Successful exploitation of the vulnerability leads to session steal.

Mitigation

Update to version 10.1 Build 135.8, 10.5 Build 61.11, 11.0 Build 65.31/65.35F.

Vulnerable software versions

Citrix NetScaler: 10.1 - 11.1

External links

http://support.citrix.com/article/CTX218361

Q & A

Can this vulnerability be exploited remotely?

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

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.

Is there known malware, which exploits this vulnerability?

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