CVE-2019-12991 vulnerability in Citrix Products
Published on July 16, 2019
Citrix SD-WAN 10.2.x before 10.2.3 and NetScaler SD-WAN 10.0.x before 10.0.8 have Improper Input Validation (issue 5 of 6).
Known Exploited Vulnerability
This Citrix SD-WAN and NetScaler Command Injection Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. Authenticated Command Injection in Citrix SD-WAN Appliance and NetScaler SD-WAN Appliance.
The following remediation steps are recommended / required by April 15, 2022: Apply updates per vendor instructions.
Vulnerability Analysis
CVE-2019-12991 can be exploited with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. It has an exploitability score of 2.8 out of four. The potential impact of an exploit of this vulnerability is considered to be very high.
What is a Shell injection Vulnerability?
The software constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.
CVE-2019-12991 has been classified to as a Shell injection vulnerability or weakness.
Products Associated with CVE-2019-12991
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What versions are vulnerable to CVE-2019-12991?
- Citrix Netscaler Sd Wan Version 10.0 Fixed in Version 10.0.8
- Citrix Sd Wan Version 10.2 Fixed in Version 10.2.3