April 9, 2019
Microsoft Azure DevOps Server is prone to an HTML-injection vulnerability. Successful exploits will allow attacker-supplied HTML and script code to run in the context of the affected browser, to conduct spoofing attacks or redirect the user to a malicious website. Other attacks are also possible.
- Microsoft Azure DevOps Server 2019
Configure webservers to serve only specific, defined file types.
Filter access to the affected computer at the network boundary if global access isn’t needed. Restricting access to only trusted computers and networks might greatly reduce the likelihood of a successful exploit.
Deploy network intrusion detection systems to monitor network traffic for malicious activity.
Deploy NIDS to detect and block attacks and anomalous activity such as requests containing suspicious URI sequences. Since the webserver may log such requests, review logs regularly.
Since a successful exploit of this issue allows malicious script code to execute in web clients, consider disabling support for script code and active content within a client browser. Note that this mitigation tactic might adversely affect legitimate websites that rely on the execution of browser-based script code.
Updates are available. Please see the references or vendor advisory for more information.
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