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TITLE:
OpenStack Compute (Nova) Host File Injection and File Corruption
Vulnerabilities

SECUNIA ADVISORY ID:
SA49763

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/49763/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=49763

RELEASE DATE:
2012-07-04

DISCUSS ADVISORY:
http://secunia.com/advisories/49763/#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/49763/

ONLY AVAILABLE IN CUSTOMER AREA:
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https://ca.secunia.com/?page=viewadvisory&vuln_id=49763

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 OpenStack Compute (Nova),
which can be exploited by malicious users to cause a DoS (Denial of
Service) and potentially compromise a vulnerable system.

1) The application improperly verifies paths in requests for file
injections in disk images. This can be exploited to inject files in
arbitrary locations on the host filesystem via directory traversal
sequences.

This vulnerability only affects series Essex (2012.1) running
OpenStack API over libvirt-based hypervisors.

2) An error when handling requests for instances based on images can
be exploited to corrupt arbitrary files on the host filesystem via
specially crafted images and cause a DoS.

SOLUTION:
Fixed in the GIT repository for series Essex (2012.1) and Folsom
(2012.2). A fix for series Diablo (2011.3) is currently under review.

PROVIDED AND/OR DISCOVERED BY:
1) The vendor credits Matthias Weckbecker, SUSE Security Team
2) Pádraig Brady, Red Hat within a Launchpad bug report.

ORIGINAL ADVISORY:
Nova:
https://lists.launchpad.net/openstack/msg14089.html
https://bugs.launchpad.net/nova/+bug/1015531
https://github.com/openstack/nova/commit/2427d4a99bed35baefd8f17ba422cb7aae8dcca7
https://github.com/openstack/nova/commit/b0feaffdb2b1c51182b8dce41b367f3449af5dd9
https://review.openstack.org/9268

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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vulnerabilities.

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