Yahoo has closed off a zero day hole in its popular instant messenger program.
The hole allowed attackers to insert dubious links into status messages by simulating a file transfer.
BitDefender researcher Bogdan Botezatu found the hole that was caused by an $InlineAction parameter, which controls the accept transfer feature. The parameter could be manipulated to load an iFrame.
The attacker did not have to be in the victim's contact list to send the iFrame.
Yahoo had deployed a server-side fix for the latest version 11.x of its chat client
Bitdefender said it found the flaw while investigating a customer’s machine.