#VU29581 Information disclosure in Citrix Netscaler ADC and Citrix NetScaler Gateway - CVE-2019-18177

Vulnerability identifier: #VU29581

Vulnerability risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-18177

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Citrix Netscaler ADC
Client/Desktop applications / Software for system administration
Citrix NetScaler Gateway
Server applications / Application servers

Vendor: Citrix

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application. A remote authenticated attacker can use a configured SSL VPN endpoint and gain unauthorized access to sensitive information on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Citrix Netscaler ADC: 10.5 Build 67.10/67.13 - 12.1

Citrix NetScaler Gateway: 10.0 - 13.0.47.24

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External links
https://support.citrix.com/article/CTX276688

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Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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