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Sid 1-47490

Message

BROWSER-IE Microsoft Edge Chakra Scripting Engine memory corruption attempt

Summary

This event is generated when an html page designed to crash Microsoft Edge traverses the network.

Impact

Attempted User Privilege Gain

CVE-2018-8266:

CVSS base score 7.5

CVSS impact score 5.9

CVSS exploitability score 1.6

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Detailed information

An issue has been identified in Edge where an object's pointer gets overwritten. Successful exploitation of this vulnerability can achieve Remote Code Execution.

CVE-2018-8266: A remote code execution vulnerability exists in the way that the Chakra scripting engine handles objects in memory in Microsoft Edge, aka "Chakra Scripting Engine Memory Corruption Vulnerability." This affects Microsoft Edge, ChakraCore. This CVE ID is unique from CVE-2018-8380, CVE-2018-8381, CVE-2018-8384.

Affected systems

  • microsoft chakracore 1.10.1
  • microsoft edge -

Ease of attack

CVE-2018-8266:

Access Vector

Access Complexity

Authentication

False positives

None known.

False negatives

None known.

Corrective action

Contributors

  • Cisco's Talos Intelligence Group

Additional References

  • portal.msrc.microsoft.com/en-us/security-guidance/advisory/CVE-2018-8266