Secunia Security Advisory - Two vulnerabilities have been reported in Unbound, which can be exploited by malicious people to cause a DoS (Denial of Service).
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TITLE:
Unbound Two Denial of Service Vulnerabilities
SECUNIA ADVISORY ID:
SA47220
VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/47220/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=47220
RELEASE DATE:
2011-12-19
DISCUSS ADVISORY:
http://secunia.com/advisories/47220/#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/47220/
ONLY AVAILABLE IN CUSTOMER AREA:
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* Report Reliability
* Secunia PoC
* Secunia Analysis
* Systems Affected
* Approve Distribution
* Remediation Status
* Secunia CVSS Score
* CVSS
https://ca.secunia.com/?page=viewadvisory&vuln_id=47220
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:
Two vulnerabilities have been reported in Unbound, which can be
exploited by malicious people to cause a DoS (Denial of Service).
1) A memory allocation error when processing certain RRs (Resource
Records) can be exploited to cause a crash by sending signed
duplicate redirecting RRs.
2) An error when processing certain responses for NSEC3-signed zones
can be exploited to e.g. cause an assertion error or crash by sending
specially crafted responses.
The vulnerabilities are reported in versions prior to 1.4.14.
SOLUTION:
Update to version 1.4.13p2 and 1.4.14 or apply patches.
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/
PROVIDED AND/OR DISCOVERED BY:
Reported by the vendor.
ORIGINAL ADVISORY:
http://unbound.nlnetlabs.nl/downloads/CVE-2011-4528.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/
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