A pair of defects cause the server to halt upon processing certain packets. The patch is to properly discard or process those packets.
Document ID: CVE-2011-2748, CVE-2011-2749
CVSS Score: 7.8
CVSS Equation: (AV:N/AC:L/Au:N/C:N/I:N/A:C)
For more information on the Common Vulnerability Scoring System and to obtain your specific environmental score please visit: http://nvd.nist.gov/cvww.cfm?calculator&adv&version=vector=(AV:N/AC:L/Au:N/C:N/I:N/A:C)
Limiting DHCP and Bootp packets to only within your administrative domain will limit exposure.
Upgrade to: 3.1-ESV-R3, 4.1-ESV-R3 or 4.2.2
Please note that this is the last update to 3.1-ESV as it will be End-of-Life after this release.
Download these versions from https://www.isc.org/downloads/all
Found by David Zych at University of Illinois
Document Revision History
1.0 27 July 2011 - Phase 1 disclosure
1.1 09 August 2011 - Phase 2 and 3 disclosures
- 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
Do you have Questions? Questions regarding this advisory should go to firstname.lastname@example.org.
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