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TITLE:
Elgg Cross-Site Scripting and Security Bypass Vulnerabilities

SECUNIA ADVISORY ID:
SA49129

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/49129/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=49129

RELEASE DATE:
2012-05-21

DISCUSS ADVISORY:
http://secunia.com/advisories/49129/#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/49129/

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=49129

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 Elgg,
which can be exploited by malicious users to bypass certain security
restrictions and by malicious people to bypass certain security
restrictions and conduct cross-site scripting attacks.

1) Input passed to the "view" parameter in index.php (when "search"
is set) 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.

2) An error when processing user registration requests can be
exploited to bypass account validation.

3) An error when caching access permissions for a user can be
exploited to gain unauthorized access to private entities.

Successful exploitation of this vulnerability requires that no plugin
is enabled which calls an entity getter in its init function.

The security issue and vulnerabilities are reported in version 1.8.4.
Prior versions may also be affected.

SOLUTION:
Update to version 1.8.5.

PROVIDED AND/OR DISCOVERED BY:
1) The vendor credits Yang Dingjie, Qualys.
2) The vendor credits Paweł Sroka.
3) The vendor credits Mike Hedman.

ORIGINAL ADVISORY:
http://blog.elgg.org/pg/blog/evan/read/209/elgg-185-released

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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