CVE-2010-3614: Key algorithm rollover bug in BIND 9
named (acting as DNSSEC validating resolver) could incorrectly mark zone data as insecure when the zone being queried is undergoing a key algorithm rollover.
Posting Date: 01 Dec 2010
Program Impacted: BIND
Versions Affected: 9.0.x to 9.7.2-P2, 9.4-ESV to 9.4-ESV-R3, 9.6-ESV to 9.6-ESV-R2
named, acting as a DNSSEC validator, was determining if an NS RRset is insecure based on a value that could mean either that the RRset is actually insecure or that there wasn't a matching key for the RRSIG in the DNSKEY RRset when resuming from validating the DNSKEY RRset.
This can happen when in the middle of a DNSKEY algorithm rollover, when two different algorithms were used to sign a zone but only the new set of keys are in the zone DNSKEY RRset.
See https://tools.ietf.org/html/draft-ietf-dnsop-rfc4641bis-02#section-4.2.4 for example scenario.
Impact and Risk Assessment: Answers are marked incorrectly as insecure.
CVSS Score: 5.0
CVSS Equation: (AV:N/AC:L/Au:N/C:N/I:P/A:N)
For more information on the Common Vulnerability Scoring System and to obtain your specific environmental score please visit: https://nvd.nist.gov/cvss.cfm?version=2&vector=(AV:N/AC:L/Au:N/C:N/I:P/A:N)
Active exploits: None known at this time.
If you are running anything not listed below, upgrade as other versions are EOL and not being patched. 9.4: upgrade to 9.4-ESV-R4, or newer 9.6: upgrade to 9.6.2-P3 or 9.6-ESV-R3, or newer 9.7: upgrade to 9.7.2-P3
Document Revision History
Nov24-Corrected/updated: Versions Affected, CVSS Base Score and Solution
See our BIND 9 Security Vulnerability Matrix for a complete listing of security vulnerabilities and versions affected.
Do you still have questions? Questions regarding this advisory should go to firstname.lastname@example.org.
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