The Month of Apple Bugs project has identified a vulnerability within iChat.The vulnerability can lead to a denial-of-service attack using Apple’s Bonjour “zero configuration” networking technology.The bug researchers believe that if a malicious application repeatedly advertises a user’s presence using Bonjour, iChat will keep adding that user to the contacts list.This blocks iChat users from finding additional people on the network and makes communication over the network unstable. The researchers also describe a second associated bug. Apparently, it’s possible to build a malicious application that will cause the iChat Agent to crash.“Apple iChat Bonjour functionality is affected by several remotely exploitable denial-of-service flaws which can be triggered via advertising presence services over multicast DNS,” the Month of Apple Bugs researchers claim. Security experts at Secunia rate the risk as “not critical.”“The vulnerability is caused due to an error in iChat agent using Bonjour within the processing of TXT key hashes. This can be exploited to cause the application to crash by broadcasting a specially crafted TXT key hash,” Secunia explains.Both vulnerabilities can be protected against by refraining from using iChat with Bonjour on anything other than a trusted network. -Jonny Evans, Macworld.co.uk Related content news Chinese state actors behind espionage attacks on Southeast Asian government The distinct groups of activities formed three different clusters, each attributed to a specific APT group. By Shweta Sharma Sep 25, 2023 4 mins Advanced Persistent Threats Advanced Persistent Threats Cyberattacks feature How to pick the best endpoint detection and response solution EDR software has emerged as one of the preeminent tools in the CISO’s arsenal. Here’s what to look for and what to avoid when choosing EDR software. By Linda Rosencrance Sep 25, 2023 10 mins Intrusion Detection Software Security Monitoring Software Data and Information Security feature Top cybersecurity M&A deals for 2023 Fears of recession, rising interest rates, mass tech layoffs, and conservative spending trends are likely to make dealmakers cautious, but an ever-increasing need to defend against bigger and faster attacks will likely keep M&A activity steady in By CSO Staff Sep 22, 2023 24 mins Mergers and Acquisitions Data and Information Security IT Leadership brandpost Unmasking ransomware threat clusters: Why it matters to defenders Similar patterns of behavior among ransomware treat groups can help security teams better understand and prepare for attacks By Joan Goodchild Sep 21, 2023 3 mins Cybercrime Podcasts Videos Resources Events SUBSCRIBE TO OUR NEWSLETTER From our editors straight to your inbox Get started by entering your email address below. Please enter a valid email address Subscribe