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FreeBSD : dns/bind9* -- zero-length RDATA can cause named to terminate, reveal memory (1ecc0d3f-ae8e-11e1-965b-0024e88a8c98)
high Nessus Plugin ID 59361
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Synopsis
The remote FreeBSD host is missing one or more security-related updates.Description
ISC reports :Processing of DNS resource records where the rdata field is zero length may cause various issues for the servers handling them.
Processing of these records may lead to unexpected outcomes. Recursive servers may crash or disclose some portion of memory to the client.
Secondary servers may crash on restart after transferring a zone containing these records. Master servers may corrupt zone data if the zone option 'auto-dnssec' is set to 'maintain'. Other unexpected problems that are not listed here may also be encountered.
Impact: This issue primarily affects recursive nameservers.
Authoritative nameservers will only be impacted if an administrator configures experimental record types with no data. If the server is configured this way, then secondaries can crash on restart after transferring that zone. Zone data on the master can become corrupted if the zone with those records has named configured to manage the DNSSEC key rotation.
Solution
Update the affected packages.See Also
Plugin Details
Severity: High
ID: 59361
File Name: freebsd_pkg_1ecc0d3fae8e11e1965b0024e88a8c98.nasl
Version: 1.9
Type: local
Family: FreeBSD Local Security Checks
Published: 6/5/2012
Updated: 1/6/2021
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 5.2
CVSS v2
Risk Factor: High
Base Score: 8.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:C
Vulnerability Information
CPE: p-cpe:/a:freebsd:freebsd:bind96, p-cpe:/a:freebsd:freebsd:bind97, p-cpe:/a:freebsd:freebsd:bind98, p-cpe:/a:freebsd:freebsd:bind99, cpe:/o:freebsd:freebsd
Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info
Patch Publication Date: 6/4/2012
Vulnerability Publication Date: 6/4/2012
Reference Information
CVE: CVE-2012-1667