Microsoft Apps on MacOS: Security Flaws Exposed
If you use Microsoft productivity apps like Word or Excel for Mac, you need to be aware of a newly reported vulnerability. According to cybersecurity researchers from Cisco Talos, several common Microsoft apps on MacOS contain significant security flaws that could expose your sensitive data to hackers.
Understanding the Danger to Microsoft Apps on MacOS
The vulnerabilities in Microsoft apps on MacOS can allow hackers to bypass permission requirements and access critical features like your camera, microphone, and confidential files. This is due to a feature called “com.apple.security.cs.disable-library-validation”, which disables essential security safeguards, leaving your apps vulnerable to compromise.
Researchers uncovered eight distinct vulnerabilities that allow hackers to exploit the permissions you've already granted to apps like Excel, PowerPoint, and Outlook. For example, when you grant access to your microphone for recording a presentation, the permission remains in effect until you manually revoke it. Hackers can take advantage of this to infiltrate the system without any further authorization.
Once they locate these permissions, hackers can inject malicious libraries into the apps and take control of your device without you even realizing it.
Potential Hacker Activities Exploiting the Vulnerabilities
Exploiting these vulnerabilities gives hackers the ability to:
- Send messages from your Outlook email client on MacOS.
- Activate your camera or microphone to spy on you.
- Record your screen while you work.
- Monitor Teams calls and collect sensitive information.
- Access data from OneNote on MacOS.
If you’re concerned about the security of your Microsoft apps on Mac, click here to schedule a discovery call with Lazer IT Consultants for expert guidance.
Microsoft’s Response and Steps to Remain Secure
While these security flaws are concerning, Microsoft does not plan to issue a patch for this vulnerability. The company believes the actual risk of an attack is low, citing the many variables required for a successful breach. According to Microsoft, MacOS itself provides sufficient protection against these types of attacks.
Microsoft did address the vulnerability in Teams and OneNote on MacOS through a recent update, but for other apps, they state that some plugins require unsigned libraries to function, and a fix could disrupt plugin functionality.
Despite this, it's essential to take precautionary steps to protect your data:
- Keep your operating system updated and install security patches as soon as they become available.
- Regularly review your privacy settings to ensure only trusted apps have access to sensitive features like the microphone and camera.
- Avoid installing third-party plugins for Microsoft apps, as they can increase vulnerability.
- Ensure that your Microsoft apps, including OfficeSuite for MacOS, are up to date to avoid any known issues.
By following these steps, you can significantly reduce your risk of falling victim to these vulnerabilities.
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Conclusion
The recently exposed vulnerabilities in Microsoft apps on MacOS highlight the importance of staying vigilant about cybersecurity. While Microsoft downplays the risk, taking steps like updating your system and limiting access to your device’s features can help protect against potential attacks.
To learn more about how network security services from Lazer IT Consultants can safeguard your business, contact us today.
