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Secunia Security Advisory 47463

Posted on 11 January 2012
Source : packetstormsecurity.org Link

 

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TITLE:
libvirt "bridge" Forward Mode Firewall Rules Weakness

SECUNIA ADVISORY ID:
SA47463

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/47463/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=47463

RELEASE DATE:
2012-01-10

DISCUSS ADVISORY:
http://secunia.com/advisories/47463/#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/47463/

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=47463

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 weakness has been reported in libvirt, which can be exploited by
malicious people to bypass certain security restrictions.

The weakness is caused due to libvirt incorrectly inserting certain
firewall rules, which can lead to unintended access to ports 53 and
67.

Successful exploitation requires that a libvirt network with "bridge"
forward mode is defined and started and that libvirtd is restarted.

The weakness is reported in version 0.9.4 through 0.9.8.

SOLUTION:
Update to version 0.9.9.

PROVIDED AND/OR DISCOVERED BY:
David Jaša

ORIGINAL ADVISORY:
Red Hat bug #760442:
https://bugzilla.redhat.com/show_bug.cgi?id=760442

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:
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Secunia NEVER sends attached files with advisories.
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