Overview
A remotely exploitable denial-of-service vulnerability exists in BIND.
Description
A remotely exploitable denial-of-service vulnerability exists in BIND 8.2 - 8.2.6 and BIND 8.3.0 - 8.3.3. ISC's description of this vulnerability states: It is possible to de-reference a NULL pointer for certian [sic] signature expire values. |
Impact
The BIND daemon will shut down. As a result, clients will not be able to connect to the service to resolve queries. |
Solution
Apply a patch from your vendor. In the absence of a patch, you may wish to consider ISC's recommendation, which is upgrading to "BIND 4.9.11, BIND 8.2.7, BIND 8.3.4 or preferably BIND 9." Additionally, ISC indicates, "BIND 4 is officially deprecated. Only security fixes will be issued for BIND 4." |
Disable recursion if possible. |
Vendor Information
CVSS Metrics
| Group | Score | Vector |
|---|---|---|
| Base | ||
| Temporal | ||
| Environmental |
References
Acknowledgements
Internet Security Systems is credited for discovering this vulnerability.
This document was written by Ian A Finlay.
Other Information
| CVE IDs: | CVE-2002-1221 |
| Severity Metric: | 27.54 |
| Date Public: | 2002-11-12 |
| Date First Published: | 2002-11-13 |
| Date Last Updated: | 2003-02-25 18:24 UTC |
| Document Revision: | 10 |