Vulnerability identifier: #VU29582
Vulnerability risk: Medium
CVSSv4.0: 7.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Green]
CVE-ID: CVE-2020-8187
CWE-ID:
CWE-20
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 perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can use a configured SSL VPN or AAA endpoint and perform a denial of service (DoS) attack.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Citrix Netscaler ADC: 11.1 51.21 - 12.0
Citrix NetScaler Gateway: 11.1 - 12.0.63.13
External links
https://support.citrix.com/article/CTX276688
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.