December 11, 2018
Microsoft Outlook is prone to a remote code-execution vulnerability. Successful exploits may allow an attacker to execute arbitrary code in the context of the currently logged-in user. Failed attacks will cause denial of service conditions.
- Microsoft Office 2019 for 32-bit editions
- Microsoft Office 2019 for 64-bit editions
- Microsoft Office 365 ProPlus for 32-bit Systems
- Microsoft Office 365 ProPlus for 64-bit Systems
- Microsoft Outlook 2010 (32-bit editions) Service Pack 2
- Microsoft Outlook 2010 (64-bit editions) Service Pack 2
- Microsoft Outlook 2013 RT Service Pack 1
- Microsoft Outlook 2013 Service Pack 1 (32-bit editions)
- Microsoft Outlook 2013 Service Pack 1 (64-bit editions)
- Microsoft Outlook 2016 (32-bit editions)
- Microsoft Outlook 2016 (64-bit editions)
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. This includes but is not limited to requests that include NOP sleds and 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.
Implement multiple redundant layers of security.
Memory-protection schemes (such as nonexecutable stack and heap configurations and randomly mapped memory segments) will complicate exploits of memory-corruption vulnerabilities.
Updates are available. Please see the references or vendor advisory for more information.
Yonghui Han of Fortinet’s FortiGuard Labs
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