CVE-2006-4095: Assertion failure when querying for SIG records
Posting date: 5 Sep 2006
Program Impacted: BIND
BIND 9.3.x versions 9.3.0, 9.3.1, 9.3.2, 9.3.3b, and 9.3.3rc1, and BIND 9.4.x versions 9.4.0a1, 9.4.0a2, 9.4.0a3, 9.4.0a4, 9.4.0a5, 9.4.0a6, and 9.4.0b1.
Queries for SIG records will trigger a assertion failure if more than one SIG(covered) RRset is returned.
Exposure can be minimized by restricting sources that can ask for recursion.
If a nameserver is serving a RFC 2535 DNSSEC zone and is queried for the SIG records where the are multiple SIG(covered) RRsets (e.g. a zone apex) then named will trigger a assertion failure when it trys to construct the response.
None known at this time.
Upgrade to BIND 9.3.4, or 9.4.0, or 9.5.0
See our BIND Security Matrix for a complete listing of Security Vulnerabilities and versions affected.
If you'd like more information on our Forum or product support please visit www.isc.org/support.
Do you still have questions? Questions regarding this advisory should go to firstname.lastname@example.org
Note: ISC patches only currently supported versions. When possible we indicate EOL versions affected.
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
This Knowledge Base article https://kb.isc.org/article/cve-2006-4095 is the complete and official security advisory document.
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