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TITLE:
Chyrp Cross-Site Scripting and File Inclusion Vulnerabilities

SECUNIA ADVISORY ID:
SA45184

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/45184/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=45184

RELEASE DATE:
2011-07-24

DISCUSS ADVISORY:
http://secunia.com/advisories/45184/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
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 * Criticality Level
 * Impact
 * Where
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 * Operating System / Software
 * CVE Reference(s)

http://secunia.com/advisories/45184/

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https://ca.secunia.com/?page=viewadvisory&vuln_id=45184

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:
Eldar Marcussen has discovered some vulnerabilities in Chyrp, which
can be exploited by malicious people to conduct cross-site scripting
attacks and disclose sensitive information.

1) Input passed via the "action" parameter to admin/index.php and
includes/javascript.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 via the "title" and "body" parameters to
admin/help.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.

Successful exploitation of this vulnerability requires that
"register_globals" is enabled.

3) Input passed via the "action" parameter to index.php is not
properly verified before being used to include files. This can be
exploited to include arbitrary file from local resources via
directory traversal sequences and URL-encoded NULL bytes.

Successful exploitation of this vulnerability requires that
"magic_quotes_gpc" is disabled.

The vulnerabilities are confirmed in version 2.1. Other versions may
also be affected.

SOLUTION:
Edit the source code to ensure that input is properly sanitised and
verified.

PROVIDED AND/OR DISCOVERED BY:
Eldar "Wireghoul" Marcussen

ORIGINAL ADVISORY:
Eldar Marcussen:
http://www.justanotherhacker.com/advisories/JAHx113.txt

oCERT:
http://www.ocert.org/advisories/ocert-2011-001.html

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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