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Sid 1-46192

Message

FILE-OFFICE Microsoft Office Excel drawing cell reuse use-after-free attempt

Summary

This event is generated when a malicious crafted Microsoft Excel document is found traversing the network.

Impact

Attempted User Privilege Gain

CVE-2018-1011:

CVSS base score 7.8

CVSS impact score 5.9

CVSS exploitability score 1.8

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Detailed information

CVE-2018-1011: A remote code execution vulnerability exists in Microsoft Excel software when the software fails to properly handle objects in memory, aka "Microsoft Excel Remote Code Execution Vulnerability." This affects Microsoft Excel. This CVE ID is unique from CVE-2018-0920, CVE-2018-1027, CVE-2018-1029.

Affected systems

  • microsoft excel 2010
  • microsoft excel 2013
  • microsoft excel_rt 2013

Ease of attack

CVE-2018-1011:

Access Vector

Access Complexity

Authentication

False positives

False negatives

Corrective action

Follow corporate patch and update policies. Update MS Office as soon as possible.

Contributors

  • Cisco's Talos Intelligence Group

Additional References

  • portal.msrc.microsoft.com/en-us/security-guidance/advisory/CVE-2018-1011