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TITLE:
pfSense Security Issue and Multiple Vulnerabilities

SECUNIA ADVISORY ID:
SA46780

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/46780/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=46780

RELEASE DATE:
2011-12-22

DISCUSS ADVISORY:
http://secunia.com/advisories/46780/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
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 * CVE Reference(s)

http://secunia.com/advisories/46780/

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https://ca.secunia.com/?page=viewadvisory&vuln_id=46780

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
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http://secunia.com/vulnerability_scanning/personal/
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DESCRIPTION:
A security issue and multiple vulnerabilities have been reported in
pfSense, which can be exploited by malicious users to bypass certain
security restrictions and by malicious people to conduct cross-site
scripting attacks and cause a DoS (Denial of Service).

1) Input passed via the "style" parameter to status_rrd_graph.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) The security issue is caused due to the "CA" basic constraints
parameter in all issued issued x.509 certificates being set to
"TRUE". This can be exploited to issue sub-certificates with
arbitrary common names (CN).

3) The application bundles a vulnerable version of ISC DHCP.

For more information:
SA45582

Vulnerability #1 is confirmed in version 2.0 and vulnerabilities #2-3
are reported in version 2.0. Prior versions may also be affected.

SOLUTION:
Update to version 2.0.1.

PROVIDED AND/OR DISCOVERED BY:
1) Jan Fischbach via Secunia.
2) Florent Daigniere, Matta Consulting.

ORIGINAL ADVISORY:
pfSense:
http://blog.pfsense.org/?p=633

pfSense:
http://redmine.pfsense.org/issues/1888

MATTA-2011-001:
https://www.trustmatta.com/advisories/MATTA-2011-001.txt

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
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