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Sid 1-48051

Message

BROWSER-IE Microsoft Edge OP_Memset type confusion attempt

Summary

This event is generated when JavaScript targeted against Microsoft Edge Browser traverses the network.

Impact

Attempted User Privilege Gain

CVE-2018-8505:

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

A type confusion vulnerability is identified in Edge. This vulnerability can be used to achieve Remote code execution. CVE-2018-8505: 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-2018-8503, CVE-2018-8510, CVE-2018-8511, CVE-2018-8513.

Affected systems

  • microsoft chakracore -
  • microsoft edge -

Ease of attack

CVE-2018-8505:

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-2018-8505
  • portal.msrc.microsoft.com/en-us/security-guidance/advisory/CVE-2019-0771