#VU29585 Improper Authorization in Citrix products - CVE-2020-8193

Vulnerability identifier: #VU29585

Vulnerability risk: Medium

CVSSv4.0: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:A/U:Green]

CVE-ID: CVE-2020-8193

CWE-ID: CWE-285

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Citrix Netscaler ADC
Client/Desktop applications / Software for system administration
Citrix NetScaler Gateway
Server applications / Application servers
SD-WAN 5100 WANOP
Hardware solutions / Other hardware appliances
SD-WAN 5000 WANOP
Hardware solutions / Other hardware appliances
SD-WAN 4100 WANOP
Hardware solutions / Other hardware appliances
SD-WAN 4000 WANOP
Hardware solutions / Other hardware appliances

Vendor: Citrix

Description

The vulnerability allows a remote attacker to bypass authorization process.

The vulnerability exists due to improper authorization. A remote authenticated attacker with access to the NSIP can bypass implemented security restrictions.

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

SD-WAN 5100 WANOP: 10.2.3 - 11.2.0

SD-WAN 5000 WANOP: 10.2.3 - 11.2.0

SD-WAN 4100 WANOP: 10.2.3 - 11.2.0

SD-WAN 4000 WANOP: 10.2.3 - 11.2.0

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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 non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.