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Sid 1-47493

Message

BROWSER-IE Microsoft Edge Chakra Scripting Engine localeCompare type confusion attempt

Summary

This event is generated when a crafted HTML page designed to exploit Microsoft Edge traverses the network.

Impact

Attempted User Privilege Gain

CVE-2018-8355:

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 has been found in Edge. Successful exploitation of this vulnerability can achieve Remote Code Execution. CVE-2018-8355: A remote code execution vulnerability exists in the way the scripting engine handles objects in memory in Microsoft browsers, aka "Scripting Engine Memory Corruption Vulnerability." This affects ChakraCore, Internet Explorer 11, Microsoft Edge. This CVE ID is unique from CVE-2018-8353, CVE-2018-8359, CVE-2018-8371, CVE-2018-8372, CVE-2018-8373, CVE-2018-8385, CVE-2018-8389, CVE-2018-8390.

Affected systems

  • microsoft chakracore -
  • microsoft edge -
  • microsoft internet_explorer 11

Ease of attack

CVE-2018-8355:

Access Vector

Access Complexity

Authentication

False positives

None known.

False negatives

None known.

Corrective action

portal.msrc.microsoft.com/en-us/security-guidance/advisory/CVE-2018-8355

Contributors

  • Cisco's Talos Intelligence Group

Additional References

  • portal.msrc.microsoft.com/en-us/security-guidance/advisory/CVE-2018-8355