CVE-2011-0413: DHCP May Crash After Processing a DHCPv6 Decline Message
- Updated on 08 Jun 2012
- 2 minutes to read
DHCP May Crash After Processing a DHCPv6 Decline Message
Processing an address previously declined and tagged as abandoned can crash the server.
26 Jan 2011
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.
CVSS Score: 6.1 (AV:A/AC:L/Au:N/C:N/I:N/A:C)
For more information on CVSS scores, visit http://nvd.nist.gov/cvss.cfm?calculator&adv&version=2
There is no direct workaround.
Exposure to the vulnerability can be limited by a review of the filters and access to the DHCP server. It is highly recommended to limit access to those devices which require DHCP server, management access, and systems monitoring.
None known at this time.
Upgrade to 4.1.2-P1, 4.1-ESV-R1, or 4.2.1b1
Do you have Questions? Questions regarding this advisory should go to email@example.com.
This security advisory is a copy of the official document located on our website: https://www.isc.org/software/dhcp/advisories/cve-2011-0413
Do you need Software Support? Questions on ISC's Support services or other offerings should be sent to firstname.lastname@example.org. More information on ISC's support and other offerings are available at: http://www.isc.org/community/blog/201102/BIND-support
ISC Security Vulnerability Disclosure Policy : Details of our current security advisory policy and practice can be found here: https://www.isc.org/security-vulnerability-disclosure-policy
**Legal Disclaimer:** Internet Systems Consortium (ISC) is providing
this notice on an "AS IS" basis. No warranty or guarantee of any kind is expressed in this notice and none should be implied. ISC expressly excludes and disclaims any warranties regarding this notice or materials referred to in this notice, including, without limitation, any implied warranty of merchantability, fitness for a particular purpose, absence of hidden defects, or of non-infringement. Your use or reliance on this notice or materials referred to in this notice is at your own risk. ISC may change this notice at any time.
© 2001-2018 Internet Systems Consortium For assistance with problems and questions for which you have not been able to find an answer in our Knowledge Base, we recommend searching our community mailing list archives and/or posting your question there (you will need to register there first for your posts to be accepted). The bind-users and the dhcp-users lists particularly have a long-standing and active membership. ISC relies on the financial support of the community to fund the development of its open source software products. If you would like to support future product evolution and maintenance as well having peace of mind knowing that our team of experts are poised to provide you with individual technical assistance whenever you call upon them, then please consider our Professional Subscription Support services - details can be found on our main website.