BROWSER-CHROME -- Snort has detected suspicious traffic known to exploit vulnerabilities present in the Chrome browser. These rules are separate from the "browser-webkit" category; while it uses the Webkit rendering engine, there's a lot of other features to create a secondary Chrome category.
BROWSER-CHROME Google Chrome ReadableStream out of bounds read attempt
This rule is looking for a specific set of JavaScript functions that when used together can lead to an out of bounds read in vulnerable versions of Google Chrome. Attackers who leverage this vulnerability may be able to leak sensitive information, or in conjunction with another exploit to further compromise a user. Specifically, this vulnerability looks for an issue within the ReadableStream set of functionality that is supported by Google Chrome. Attackers who abuse JavaScript Promises in conjunction with a ReadableStream may be able to access memory they otherwise would not have access to.
This rule when an attacker attempts to exploit CVE-2020-6390.
Public information/Proof of Concept available
No known false positives
Cisco Talos Intelligence Group
No rule groups
Memory Corruption
Memory Corruption is any vulnerability that allows the modification of the content of memory locations in a way not intended by the developer. Memory corruption results are inconsistent; they could lead to fatal errors and system crashes or data leakage; some have no effect at all.
CVE-2020-6390 |
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Tactic: Execution
Technique: User Execution
For reference, see the MITRE ATT&CK vulnerability types here: https://attack.mitre.org
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