The term “0.0.0.0 Day” refers to a newly discovered vulnerability, identified by Israeli cybersecurity startup Oligo, that attackers can exploit before a patch is available. The technical details involve malicious websites tricking browsers into allowing them to interact with APIs running on a user’s local machine. These APIs are typically designed for internal communication within applications and should not be accessible from external sources like websites. By exploiting this vulnerability, attackers could potentially gain unauthorized access to sensitive information stored on a user’s computer, steal data, or even launch malware.
The research highlights a concerning gap in browser security, exposing a weakness in how browsers handle network requests. This inconsistency in security mechanisms across different browsers potentially grants malicious actors access to a user’s local network and the services running on it.
In response to this security flaw, Apple and Google are working to address the issue by closing the loophole. Reports indicate that Apple Safari will block all attempts to query the 0.0.0.0 IP address in the upcoming macOS 15 Sequoia beta version. Similarly, Google Chrome’s security team is also working on a fix, with complete implementation expected by Chrome 133.
Source: The Cyber Express
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