SID 1:52479

Rule Category

BROWSER-IE -- Snort has detected traffic known to exploit vulnerabilities present in the Internet Explorer browser, or products that have the Trident or Tasman engines.

Alert Message

BROWSER-IE Microsoft Edge Chakra JIT out of bounds information disclosure attempt

Rule Explanation

This event is generated when a specially crafted JavaScript file is detected that can cause an Out-of-Bounds read or write in certain versions of Microsoft Chakra JavaScript engine. Impact: Attempted Denial of Service Details: A bug exists in certain versions of Microsoft's Chakra JavaScript engine which allows a specially crafted JavaScript file to access Out-of-Bounds memory by exploiting a bug in the optimization phase to avoid bounds checking on a loop iterator. Ease of Attack:

What To Look For

No information provided

Known Usage

No public information

False Positives

No known false positives

Contributors

Cisco Talos Intelligence Group