CVE-2002-1221: BIND 8 fails to properly dereference cache SIG RR elements with invalid expiry times
- Updated on 28 Oct 2014
- 1 minute to read
De-referencing null pointer for certain signature expire values.
CVE: [CVE-2002-1221](http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2002-1221) CERT: [VU#581682](http://www.kb.cert.org/vuls/id/581682) Posting date: 12 Nov 2002 Program Impacted: [BIND](https://www.isc.org/software/bind) Versions affected: 8.3.0 - 8.3.3 Severity: Serious Exploitable: Remotely Description: Remote attackers can cause a denial of service
(crash) via SIG RR elements with invalid expiry times, which are removed from the internal BIND database and later cause a null dereference.
Workarounds: Disable recursion, if possible. Active exploits: None known at this time. Solution: Upgrade to BIND 8.3.4 or later **Acknowledgements:**
ISC would like to thank Internet Security Systems for bringing this to our attention.
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