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TITLE:
Fedora update for unbound

SECUNIA ADVISORY ID:
SA44865

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/44865/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=44865

RELEASE DATE:
2011-06-08

DISCUSS ADVISORY:
http://secunia.com/advisories/44865/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
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 * Impact
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 * CVE Reference(s)

http://secunia.com/advisories/44865/

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https://ca.secunia.com/?page=viewadvisory&vuln_id=44865

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:
Fedora has issued an update for unbound. This fixes a vulnerability,
which can be exploited by malicious people to cause a DoS (Denial of
Service).

The vulnerability is caused due to an assertion error when processing
an empty UDP message while replying to certain DNS queries, which can
be exploited to cause a crash.

Successful exploitation requires that assertions are configured and
the interface-automatic option is enabled.

SOLUTION:
Apply updated packages via the yum utility ("yum update unbound").

PROVIDED AND/OR DISCOVERED BY:
The vendor credits Christopher Olah.

ORIGINAL ADVISORY:
FEDORA-2011-7555:
http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061243.html

Unbound:
http://unbound.nlnetlabs.nl/downloads/CVE-2011-1922.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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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.

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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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