Microsoft Teams for macOS Local Privilege Escalation

This blog post shares the details of a vulnerability Offensive Security discovered in the XPC service of Microsoft Teams. Although Microsoft secured these services reasonably well, we will see how small code mistakes can have serious impacts.

We reported the issue to MSRC, but unfortunately Microsoft decided that “the finding is valid but does not meet our bar for immediate servicing.” While they have since hardened the XPC service, it remains exploitable.

The full post is available on Offensive Security’s blog:

https://www.offensive-security.com/offsec/microsoft-teams-macos-local-privesc/