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TITLE:
ZTE ZXDSL 831 II Modem Cross-Site Request Forgery and Information
Disclosure Vulnerabilities

SECUNIA ADVISORY ID:
SA46659

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/46659/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=46659

RELEASE DATE:
2011-11-08

DISCUSS ADVISORY:
http://secunia.com/advisories/46659/#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/46659/

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=46659

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:
Two vulnerabilities have been reported in the ZTE ZXDSL 831 II modem,
which can be exploited by malicious people to conduct cross-site
request forgery attacks and to disclose sensitive information.

1) The application's web interface allows users to perform certain
actions via HTTP requests without performing any validity checks to
verify the requests. This can be exploited to e.g. change an
administrator's password by tricking a logged in administrator into
visiting a malicious web site.

2) The vulnerability is caused due to the application displaying
authentication credentials in the accessaccount.cgi script, which can
be exploited to disclose the authentication credentials.

The vulnerabilities are reported in version 7.5.0a_Z29_OV. Other
versions may also be affected.

SOLUTION:
Restrict access to trusted users only. Do not browse untrusted
websites or follow untrusted links while logged in to the
application.

PROVIDED AND/OR DISCOVERED BY:
Mehdi Boukazoula and Ibrahim Debeche.

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.

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