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Sid 1-45142

Message

BROWSER-IE Microsoft Edge type confusion attempt

Summary

This event is generated when there a type confusion in an array detected In Microsoft Edge which could lead to remote code execution.

Impact

Attempted User Privilege Gain

CVE-2017-11895:

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

CVE-2017-11895: ChakraCore, and Internet Explorer in Microsoft Windows 7 SP1, Windows Server 2008 R2 SP1, Windows 8.1 and Windows RT 8.1, Windows Server 2012 R2, and Internet Explorer and Microsoft Edge in Windows 10 Gold, 1511, 1607, 1703, 1709, and Windows Server 2016 allows an attacker to gain the same user rights as the current user, due to how the scripting engine handles objects in memory, aka "Scripting Engine Memory Corruption Vulnerability". This CVE ID is unique from CVE-2017-11886, CVE-2017-11889, CVE-2017-11890, CVE-2017-11893, CVE-2017-11894, CVE-2017-11901, CVE-2017-11903, CVE-2017-11905, CVE-2017-11907, CVE-2017-11908, CVE-2017-11909, CVE-2017-11910, CVE-2017-11911, CVE-2017-11912, CVE-2017-11913, CVE-2017-11914, CVE-2017-11916, CVE-2017-11918, and CVE-2017-11930.

Affected systems

  • microsoft edge -
  • microsoft internet_explorer 11

Ease of attack

CVE-2017-11895:

Access Vector

Access Complexity

Authentication

False positives

False negatives

Corrective action

Contributors

  • Cisco's Talos Intelligence Group

Additional References

  • portal.msrc.microsoft.com/en-us/security-guidance/advisory/CVE-2017-11895
  • portal.msrc.microsoft.com/en-us/security-guidance/advisory/CVE-2018-8456
  • portal.msrc.microsoft.com/en-us/security-guidance/advisory/CVE-2018-8542
  • portal.msrc.microsoft.com/en-us/security-guidance/advisory/CVE-2018-8557
  • portal.msrc.microsoft.com/en-us/security-guidance/advisory/CVE-2018-8588