Vulnerability Note VU#686084

ISC DHCP server DHCPv6 decline message processing vulnerability

Original Release date: 27 Jan 2011 | Last revised: 28 Jan 2011


ISC DHCPv6 versions 4.0.x - 4.2.x are susceptible to a denial-of-service vulnerability.


The ISC Advisory states:

"When the DHCPv6 server code processes a message for an address that was previously declined and internally tagged as abandoned it can trigger an assert failure resulting in the server crashing. This could be used to crash DHCPv6 servers remotely. This issue only affects DHCPv6 servers. DHCPv4 servers are unaffected."


A remote attacker may cause a denial of service.


Upgrade to 4.1.2-P1, 4.1-ESV-R1, or 4.2.1b1

Vendor Information (Learn More)

VendorStatusDate NotifiedDate Updated
Internet Systems ConsortiumAffected24 Jan 201126 Jan 2011
If you are a vendor and your product is affected, let us know.

CVSS Metrics (Learn More)

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A N/A



Thanks to Larissa Shapiro for reporting this vulnerability.

This document was written by Jared Allar.

Other Information

  • CVE IDs: CVE-2011-0413
  • Date Public: 26 Jan 2011
  • Date First Published: 27 Jan 2011
  • Date Last Updated: 28 Jan 2011
  • Severity Metric: 0.95
  • Document Revision: 10


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