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CVE-1999-0851: naptr bug
Author: Cathy Almond Reference Number: AA-00941 Views: 1823 Created: 2013-05-29 13:50 Last Updated: 2014-10-28 13:49 0 Rating/ Voters

Improper validation of zone data for the NAPTR record

CVE: 
CVE-1999-0851
Posting date: 
11 Nov 1999
Program Impacted: 
BIND
Versions affected: 
4.9.5, 4.9.5 patchlevel 1, 4.9.6, 4.9.7, 4.9.8, 8.1, 8.1.1, 8.1.2, 8.2, 8.2 patchlevel 1, 8.2.1, 8.2.2, 8.2.2 patchlevel 1
Severity: 
Minor
Exploitable: 
Locally
Description: 

Improper validation of zone data for the NAPTR record being loaded from disk can result in the DNS server crashing. Zone data read from the network cannot trigger this bug. Given the privilege level to modify the zone data is typically the same as running the DNS server, this bug is unlikely to result in an exploit unless zone files have unusual permissions.

Workarounds: 

Ensure that permission level required to modify zone files is the same or higher than that of the DNS server.

Active exploits: 
None known at this time.


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