Date Discovered June 13, 2017
Description Microsoft SharePoint Server is prone to a remote privilege-escalation vulnerability because it fails to properly sanitize user-supplied input.
An attackers may exploit this issue to gain elevated privileges. Successful exploits may aid in further attacks.
- Microsoft Project Server 2013 Service Pack 1
Block external access at the network boundary, unless external parties require service. 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.
Run all software as a nonprivileged user with minimal access rights. To reduce the impact of latent vulnerabilities, always run nonadministrative software as an unprivileged user with minimal access rights.
Deploy network intrusion detection systems to monitor network traffic for malicious activity. Deploy NIDS to monitor network traffic for signs of anomalous or suspicious activity such as unexplained incoming and outgoing traffic. This may indicate exploit attempts or activity that results from successful exploits.
Do not follow links provided by unknown or untrusted sources. Web users should be cautious about following links to sites that are provided by unfamiliar or suspicious sources. Filtering HTML from emails may help remove a possible vector for transmitting malicious links to users.
Since exploiting cross-site scripting issues often requires malicious script code to run in browsers, consider disabling script code and active content support within a client browser as a way to prevent a successful exploit. Note that this mitigation tactic might adversely affect legitimate sites that rely on the execution of browser-based script code.
Updates are available. Please see the references or vendor advisory for more information.
Credits Ashar Javed and Hyundai AutoEver Europe.
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