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Sid 1-38462

Message

OS-WINDOWS DCERPC Bind auth level packet privacy downgrade attempt

Summary

The SAM and LSAD protocol implementations in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, and Windows 10 Gold and 1511 do not properly establish an RPC channel, which allows man-in-the-middle attackers to perform protocol-downgrade attacks and impersonate users by modifying the client-server data stream, aka "Windows SAM and LSAD Downgrade Vulnerability" or "BADLOCK."

Impact

CVSS base score 6.8 CVSS impact score 5.2 CVSS exploitability score 1.6 confidentialityImpact HIGH integrityImpact HIGH availabilityImpact HIGH

CVE-2016-0128:

CVSS base score 6.8

CVSS impact score 5.2

CVSS exploitability score 1.6

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Detailed information

CVE-2016-0128: The SAM and LSAD protocol implementations in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, and Windows 10 Gold and 1511 do not properly establish an RPC channel, which allows man-in-the-middle attackers to perform protocol-downgrade attacks and impersonate users by modifying the client-server data stream, aka "Windows SAM and LSAD Downgrade Vulnerability" or "BADLOCK."

Affected systems

  • microsoft windows_10 -
  • microsoft windows_10 1511
  • microsoft windows_7 *
  • microsoft windows_8.1 *
  • microsoft windowsrt8.1 -
  • microsoft windowsserver2008 *
  • microsoft windowsserver2008 r2
  • microsoft windowsserver2012 -
  • microsoft windowsserver2012 r2
  • microsoft windows_vista *

Ease of attack

CVE-2016-0128:

Access Vector

Access Complexity

Authentication

False positives

None known

False negatives

None known

Corrective action

Upgrade to the latest non-affected version of the software.

Apply the appropriate vendor supplied patches.

Contributors

  • Talos research team.
  • This document was generated from data supplied by the national vulnerability database, a product of the national institute of standards and technology.
  • For more information see nvd.

Additional References

  • technet.microsoft.com/en-us/security/bulletin/MS16-047