Single Malicious GIF Opened Microsoft Teams to Nasty Attack

Microsoft has fixed a subdomain takeover vulnerability in its collaboration platform Microsoft Teams that could have allowed an inside attacker to weaponize a single GIF image and use it to pilfer data from targeted systems and take over all of an organization’s Teams accounts.

The attack simply involved tricking a victim into viewing a malicious GIF image for it to work, according to researchers at CyberArk who also created a proof-of-concept (PoC) of the attack.

Microsoft neutralized the threat last Monday, updating misconfigured DNS records, after researchers reported the vulnerability on March 23.

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Source: ThreatPost