- 08 Jun 2012
- 2 Minutes to read
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 firstname.lastname@example.org.
This security advisory is a copy of the official document located on our website: https://www.isc.org/software/dhcp/advisories/cve-2011-0413
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