Four Bugs in Microsoft Teams Left Platform Vulnerable Since March

UPDATE Four vulnerabilities in Microsoft Teams, unpatched since March, allowed link spoofing of URLs and opened the door to DoS attacks against Android users, researchers said. Researchers from Positive Security discovered four bugs in the feature earlier this year and told Microsoft about the...

Vulnerability in Windows 10 URI handler leads to remote code execution

Researchers at Positive Security have discovered a drive-by remote code-execution RCE bug in Windows 10. The vulnerability can be triggered by an argument injection in the Windows 10 default handler for ms-officecmd: URIs. It is likely that this vulnerability also exists in Windows 11. What’s...

Windows 10 Drive-By RCE Triggered by Default URI Handler

Researchers have discovered a drive-by remote code-execution RCE bug in Windows 10 via Internet Explorer 11/Edge Legacy – the EdgeHTML-based browser that’s currently the default browser on Windows 10 PCs – and Microsoft Teams. According to a report posted Tuesday by Positive Security, the...

Windows 10 Drive-By RCE Triggered by Default URI Handler

Researchers have discovered a drive-by remote code-execution RCE bug in Windows 10 via Internet Explorer 11/Edge Legacy – the EdgeHTML-based browser that’s currently the default browser on Windows 10 PCs – and Microsoft Teams. According to a report posted Tuesday by Positive Security, the...

Microsoft Teams calls do not connect with older versions of Citrix Workspace app for Chrome OS

Users who meet all 3 below conditions use versions of the Citrix Workspace app for Chrome OS 2110 and older update to Chrome OS Version 96 and above, AND have enabled Microsoft Teams optimization will see screen sharing/joining meetings/calls not connecting from Microsoft Teams within virtual...

Microsoft Teams optimization not working for self-hosted Citrix Workspace app for Chrome OS users

Users who meet all below conditions use self-hosted/repackaged versions of Citrix Workspace app for Chrome OS from their own enterprise admin consoles AND have updated to Chrome OS Version 96 and above, AND have enabled Microsoft Teams optimization AND are onversion 2111 of Citrix Workspace app f...

archTIS and Microsoft: Zero Trust information security for Microsoft Teams

Microsoft Teams has seen a surge in growth during the pandemic with over 115 million daily active users and growing.1 With it, customer imperative for enabling safe and trustworthy online collaboration has also increased significantly. The speed and simplicity of Teams business users creating new...

archTIS and Microsoft: Zero Trust information security for Microsoft Teams

Microsoft Teams has seen a surge in growth during the pandemic with over 115 million daily active users and growing.1 With it, customer imperative for enabling safe and trustworthy online collaboration has also increased significantly. The speed and simplicity of Teams business users creating new...

TeamsUserEnum - User Enumeration With Microsoft Teams API

Sometimes user enumeration could be sometimes useful during the reconnaissance of an assessment. This tool will determine if an email is registered on teams or not. More details on the immunIT's blog Usage Microsoft Teams with the search features. This tool validates an email address or a list of...

Introducing Bounty Awards for Teams Mobile Applications Security Research

We are pleased to announce the addition of Microsoft Teams mobile applications to the Microsoft Applications Bounty Program. Through the expanded program we welcome researchers from across the globe to seek out and disclose any high impact security vulnerabilities they may find in Teams mobile...

Accessibility and usability for all in Azure Sentinel

As a father of a child on the Autism spectrum who relies completely on digital media for his learning, I fully appreciate the impact that digital accessibility can have on people with disabilities. Designing with accessibility in mind greatly expands the impact of Microsoft solutions. What many...

(Pwn2Own) Microsoft Teams ElectronJS Frame Redirect Remote Code Execution Vulnerability

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Microsoft Teams Desktop. An attacker must first obtain the ability to execute arbitrary JavaScript within an iframe within the application window in order to exploit this vulnerability. The specific...

(Pwn2Own) Microsoft Teams amsVideo Cross Site Scripting Vulnerability

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Microsoft Teams Desktop. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the handli...

Microsoft Teams: Very Bad Tabs Could Have Led to BEC

Attackers could have stepped through a yawning security hole in Microsoft Teams chat service that would have let them masquerade as a targeted company’s employee by reading and sending email on their behalf. On Monday, Tenable’s Evan Grant explained in a post that he found the bug in Microsoft...

Botkube - An App That Helps You Monitor Your Kubernetes Cluster, Debug Critical Deployments And Gives Recommendations For Standard Practices

For complete documentation visit www.botkube.io BotKube integration with Slack, Mattermost or Microsoft Teams helps you monitor your Kubernetes cluster, debug critical deployments and gives recommendations for standard practices by running checks on the Kubernetes resources. You can also ask...

Windows, Ubuntu, Zoom, Safari, MS Exchange Hacked at Pwn2Own 2021

The 2021 spring edition of Pwn2Own hacking contest concluded last week on April 8 with a three-way tie between Team Devcore, OV, and Computest researchers Daan Keuper and Thijs Alkemade. A total of $1.2 million was awarded for 16 high-profile exploits over the course of the three-day virtual even...

This Week in Security News - April 9, 2021

Microsoft Teams and Zoom Hacked In $1 Million Competition and Preventing Ransomware While Working from Home...

Introducing Bounty Awards for Teams Desktop Client Security Research

Partnering with the security research community is an important part of Microsoft’s holistic approach to defending against security threats. As much of the world has shifted to working from home in the last year, Microsoft Teams has enabled people to stay connected, organized, and collaborate...

PT-2021-6652

Name of the Vulnerable Software and Affected Versions Microsoft Teams for Android affected versions not specified Description The issue is due to insufficient input validation, which can be exploited by a remote attacker to cause the application to crash. Recommendations At the moment, there is n...

PT-2021-6653

Name of the Vulnerable Software and Affected Versions Microsoft Teams affected versions not specified Description The issue is related to insufficient validation of incoming requests in Microsoft Teams, which can be exploited by a remote attacker to perform a Server-Side Request Forgery SSRF...