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Secunia Security Advisory 49795

Secunia Security Advisory 49795
Posted Jul 20, 2012
Authored by Secunia | Site secunia.com

Secunia Security Advisory - A vulnerability has been reported in NSD, which can be exploited by malicious people to cause a DoS (Denial of Service).

tags | advisory, denial of service
MD5 | 5a469f3e0b37b97a0efc0aa99949b41c

Secunia Security Advisory 49795

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TITLE:
NSD "query_add_optional()" NULL-Pointer Dereference Vulnerability

SECUNIA ADVISORY ID:
SA49795

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/49795/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=49795

RELEASE DATE:
2012-07-20

DISCUSS ADVISORY:
http://secunia.com/advisories/49795/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
* Last Update
* Popularity
* Comments
* Criticality Level
* Impact
* Where
* Solution Status
* Operating System / Software
* CVE Reference(s)

http://secunia.com/advisories/49795/

ONLY AVAILABLE IN CUSTOMER AREA:
* Authentication Level
* Report Reliability
* Secunia PoC
* Secunia Analysis
* Systems Affected
* Approve Distribution
* Remediation Status
* Secunia CVSS Score
* CVSS

https://ca.secunia.com/?page=viewadvisory&vuln_id=49795

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
* AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION:
A vulnerability has been reported in NSD, which can be exploited by
malicious people to cause a DoS (Denial of Service).

The vulnerability is caused due a NULL-pointer dereference error when
handling DNS packets in the "query_add_optional()" function (query.c)
and can be exploited to cause a child server process to crash and
subsequently stop the server from responding by sending specially
crafted DNS packets.

The vulnerability is reported in versions 3.0.0 through 3.0.8, 3.1.0
through 3.1.1, and 3.2.0 through 3.2.11.

SOLUTION:
Update to version 3.2.12 or apply patch (please see the vendor's
advisory for details).

PROVIDED AND/OR DISCOVERED BY:
The vendor credits Marek Vavrusa and Lubos Slovak, CZ.NIC Labs.

ORIGINAL ADVISORY:
NSD:
http://www.nlnetlabs.nl/downloads/CVE-2012-2978.txt

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

----------------------------------------------------------------------

About:
This Advisory was delivered by Secunia as a free service to help
private users keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/advisories/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/advisories/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

----------------------------------------------------------------------

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