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TITLE:
Elgg Multiple Cross-Site Scripting Vulnerabilities

SECUNIA ADVISORY ID:
SA45463

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/45463/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=45463

RELEASE DATE:
2011-08-02

DISCUSS ADVISORY:
http://secunia.com/advisories/45463/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
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http://secunia.com/advisories/45463/

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https://ca.secunia.com/?page=viewadvisory&vuln_id=45463

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DESCRIPTION:
Aung Khant has discovered multiple vulnerabilities in Elgg, which can
be exploited by malicious people to conduct cross-site scripting
attacks.

1) Input passed to the "page_owner" parameter in mod/file/search.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.

2) Input passed to the "content" parameter in
mod/riverdashboard/index.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.

3) Input passed to the "internalname" parameter in
engine/handlers/pagehandler.php (when "handler" is set to "embed" and
"page" is set to "upload") 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.

4) Input passed to the "page" parameter in
engine/handlers/pagehandler.php (when handler is set to "pages") 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.

5) Input passed to the "send_to" parameter in
engine/handlers/pagehandler.php (when "handler" is set to "messages"
and "page" is set to "compose") 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.

6) Input passed to the "container_guid" parameter in
engine/handlers/pagehandler.php (when "handler" is set to "pages" and
"page" is set to "new") 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.

Successful exploitation of the vulnerabilities #5 and #6 may require
that the victim is running Internet Explorer or Konqueror.

The vulnerabilities are confirmed in version 1.7.9. Prior versions
may also be affected.

SOLUTION:
Update to version 1.7.10.

PROVIDED AND/OR DISCOVERED BY:
Aung Khant, YGN Ethical Hacker Group

ORIGINAL ADVISORY:
YGN Ethical Hacker Group:
http://yehg.net/lab/pr0js/advisories/%5Belgg_179%5D_cross_site_scripting

Elgg Blog:
http://blog.elgg.org/pg/blog/brett/read/186/elgg-1710-released

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

DEEP LINKS:
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EXTENDED DESCRIPTION:
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EXTENDED SOLUTION:
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EXPLOIT:
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