Microsoft Teams might have a few serious security issues

Protection researchers have found 4 different vulnerabilities in Microsoft Teams that could be exploited by an attacker to spoof connection previews, leak IP addresses and even accessibility the program giant’s internal providers.

These discoveries were being created by researchers at Beneficial Protection who “stumbled upon” them though searching for a way to bypass the the Very same-Origin Plan (SOP) in Teams and Electron according to a new weblog write-up. For those people unfamiliar, SOP is a stability system identified in browsers that can help halt websites from attacking one particular a different.

Throughout their investigation into the make a difference, the researchers identified that they could bypass the SOP in Teams by abusing the connection preview feature in Microsoft’s video conferencing program by allowing for the consumer to create a connection preview for the target webpage and then making use of both summary text or optical character recognition (OCR) on the preview picture to extract facts. 

However, though carrying out this, Beneficial Protection co-founder Fabian Bräunlein identified other unrelated vulnerabilities in the feature’s implementation.

Microsoft Teams vulnerabilities

Of the 4 bugs Bräunlein identified in Teams, two can be employed on any device and let for server-facet ask for forgery (SSRF) and spoofing though the other two only influence Android smartphones and can be exploited to leak IP addresses and reach Denial of Assistance (DOS).

By exploiting the SSRF vulnerability, the researchers were being equipped to leak facts from Microsoft’s community network. In the meantime the spoofing bug can be employed to boost the usefulness of phishing attacks or to disguise destructive backlinks.

The DOS bug is significantly worrying as an attacker can deliver a user a information that includes a connection preview with an invalid preview connection target (for occasion “boom” in its place of “https://…”) to crash the Teams app for Android. Regretably, the app will continue on to crash when making an attempt to open up the chat or channel with the destructive information.

Beneficial Protection responsibly disclosed its results to Microsoft on March ten via its bug bounty system. However, in the time given that, the program giant has only patched the IP address leak vulnerability in Teams for Android. Now that Beneficial Protection has publicly disclosed its results, Microsoft may possibly have to patch the remaining a few vulnerabilities even although it explained to the researchers that they don’t pose an immediate danger to its people.

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Through Threatpost