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"From 2007 to 2009 vulnerabilities in a typical end-user PC almost doubled from about 220 to 420."

Non-Microsoft software to blame for increase in vulnerabilities affecting typical Windows end-users, read more:

http://secunia.com/gfx/pdf/Secunia_Half_Year_Report_2010.pdf


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TITLE:
BIND "RRSIG" Requests Endless Loop Denial of Service

SECUNIA ADVISORY ID:
SA40652

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/40652/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=40652

RELEASE DATE:
2010-07-17

DISCUSS ADVISORY:
http://secunia.com/advisories/40652/#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/40652/

ONLY AVAILABLE IN CUSTOMER AREA:
 * Authentication Level
 * Report Reliability
 * Secunia PoC
 * Secunia Analysis
 * Systems Affected
 * Approve Distribution
 * Remediation Status
 * Secunia CVSS Score
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https://ca.secunia.com/?page=viewadvisory&vuln_id=40652

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 BIND, which can be exploited by
malicious people to cause a DoS (Denial of Service).

The vulnerability is caused due to an error when handling requests
for the "RRSIG" record type where the answer is not already in the
cache, which can lead to BIND entering an endless loop generating
"RRSIG" queries to the authoritative servers.

Successful exploitation requires that the server is acting as
validating recursive server and has one or more trust anchors
configured statically and/or via DLV.

The vulnerability is reported in BIND 9.7.1 or 9.7.1-P1.

SOLUTION:
Update to BIND 9.7.1-P2.

PROVIDED AND/OR DISCOVERED BY:
The vendor credits Marco Davids of SIDN.

ORIGINAL ADVISORY:
http://www.isc.org/software/bind/advisories/cve-2010-0213

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

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About:
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private users keeping their systems up to date against the latest
vulnerabilities.

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