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TITLE:
ownCloud Multiple Vulnerabilities

SECUNIA ADVISORY ID:
SA50214

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/50214/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=50214

RELEASE DATE:
2012-08-14

DISCUSS ADVISORY:
http://secunia.com/advisories/50214/#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/50214/

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=50214

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 security issue and two vulnerabilities have been reported in
ownCloud, which can be exploited by malicious users to bypass certain
security restrictions and by malicious people to conduct cross-site
scripting and cross-site request forgery attacks.

1) An error when returning a file handle for WebDAV requests within
the "fopen()" function (apps/files_sharing/sharedstorage.php) can be
exploited to modify a shared file of another user.

Successful exploitation requires "Enable Files Versioning" to be
disabled (enabled by default).

2) The application allows users to perform certain actions via HTTP
requests without performing proper validity checks to verify the
requests. This can be exploited to perform certain actions when a
logged-in user visits a specially crafted web page.

3) Input passed via the "token" parameter (when "app" is set to
"gallery" and "getfile" is set to "sharing.php") is not properly
sanitised before being returned to the user. This can be exploited to
execute arbitrary HTML and script code in a user's browser session in
context of an affected site.

The security issue and the vulnerabilities are reported in version
4.0.6. Other versions may also be affected.

SOLUTION:
Fixed in the GIT repository.

PROVIDED AND/OR DISCOVERED BY:
1) Reported by Fuddl within a Debian bug report.
2) Reported by the vendor.
3) Julien Cayssol

ORIGINAL ADVISORY:
ownCloud:
https://gitorious.org/owncloud/owncloud/commit/ab97c04894ebce03b5b19e29ea677be8abca87ef
https://gitorious.org/owncloud/owncloud/commit/2dfc4851494a51ac04192030758f2b43da07b521
https://gitorious.org/owncloud/owncloud/commit/5f5136643562e53460af557efbb6f3c0a2a6fc80
https://gitorious.org/owncloud/owncloud/commit/05648dac619942dfccc76180d30fcd79364355ec

Debian Bug#684426:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=684426

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.

Subscribe:
http://secunia.com/advisories/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/advisories/about_secunia_advisories/


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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