#VU25816 Information disclosure in Citrix NetScaler Gateway - CVE-2020-10110

Vulnerability identifier: #VU25816

Vulnerability risk: Medium

CVSSv4.0: 5.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2020-10110

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
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 some responses of the web based solution are handled with an included caching system. A remote attacker can gain unauthorized access to sensitive information stored in cache.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Citrix NetScaler Gateway: 11.1.41.26 - 12.1.55.18

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External links
https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2020-004.txt

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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. However, proof of concept for this vulnerability is available.