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Sid 1-46548

Message

BROWSER-IE Microsoft Internet Explorer VBScript remote code execution attempt

Summary

This event is generated when a remote code execution attempt is detected in Microsoft Internet Explorer.

Impact

Attempted Administrator Privilege Gain

CVE-2018-8174:

CVSS base score 7.5

CVSS impact score 5.9

CVSS exploitability score 1.6

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

CVE-2018-8242:

CVSS base score 7.5

CVSS impact score 5.9

CVSS exploitability score 1.6

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

CVE-2018-8371:

CVSS base score 7.5

CVSS impact score 5.9

CVSS exploitability score 1.6

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

CVE-2018-8625:

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-2018-8174: A remote code execution vulnerability exists in the way that the VBScript engine handles objects in memory, aka "Windows VBScript Engine Remote Code Execution Vulnerability." This affects Windows 7, Windows Server 2012 R2, Windows RT 8.1, Windows Server 2008, Windows Server 2012, Windows 8.1, Windows Server 2016, Windows Server 2008 R2, Windows 10, Windows 10 Servers.

CVE-2018-8242: A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer, aka "Scripting Engine Memory Corruption Vulnerability." This affects Internet Explorer 9, Internet Explorer 11, Internet Explorer 10. This CVE ID is unique from CVE-2018-8283, CVE-2018-8287, CVE-2018-8288, CVE-2018-8291, CVE-2018-8296, CVE-2018-8298.

CVE-2018-8371: A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer, aka "Scripting Engine Memory Corruption Vulnerability." This affects Internet Explorer 9, Internet Explorer 11, Internet Explorer 10. This CVE ID is unique from CVE-2018-8353, CVE-2018-8355, CVE-2018-8359, CVE-2018-8372, CVE-2018-8373, CVE-2018-8385, CVE-2018-8389, CVE-2018-8390.

CVE-2018-8625: A remote code execution vulnerability exists in the way that the VBScript engine handles objects in memory, aka "Windows VBScript Engine Remote Code Execution Vulnerability." This affects Internet Explorer 9, Internet Explorer 11, Internet Explorer 10.

Affected systems

  • microsoft windows_10 -
  • microsoft windows_10 1607
  • microsoft windows_10 1703
  • microsoft windows_10 1709
  • microsoft windows_10 1803
  • microsoft windows_7 -
  • microsoft windows_8.1 -
  • microsoft windowsrt8.1 -
  • microsoft windowsserver2008 -
  • microsoft windowsserver2008 r2
  • microsoft windowsserver2012 -
  • microsoft windowsserver2012 r2
  • microsoft windowsserver2016 -
  • microsoft windowsserver2016 1709
  • microsoft windowsserver2016 1803
  • microsoft internet_explorer 9
  • microsoft internet_explorer 10
  • microsoft internet_explorer 11

Ease of attack

CVE-2018-8174:

Access Vector

Access Complexity

Authentication

CVE-2018-8242:

Access Vector

Access Complexity

Authentication

CVE-2018-8371:

Access Vector

Access Complexity

Authentication

CVE-2018-8625:

Access Vector

Access Complexity

Authentication

False positives

False negatives

Corrective action

Contributors

  • Cisco's Talos Intelligence Group

Additional References

  • CVE-2019-0793
  • CVE-2019-0794
  • CVE-2019-1063