Portwise SSL VPN 4.6 cross site scripting

Credit: null
Risk: Low
Local: No
Remote: Yes

CVSS Base Score: 4.3/10
Impact Subscore: 2.9/10
Exploitability Subscore: 8.6/10
Exploit range: Remote
Attack complexity: Medium
Authentication: No required
Confidentiality impact: None
Integrity impact: Partial
Availability impact: None

PR09-04: Cross-Site Scriting on Portwise SSL VPN v4.6 Vulnerability found: 25th March 2009 Vendor informed: 28th April 2009 Vulnerability fixed: Severity: Medium Description: The Portwise portal login page is vulnerable to XSS. Portwise is a SSL-VPN portal. Note: Other version might be affected as well The following demonstrate XSS: 1) Login page XSS https://example.com/wa/auth?&authmech=Assess&reloadFrame=%22;%3Cscript%3Eblah%3C/script%3E%3Cscript%3Ealert(document.cookie)%3C/script%3E Consequences: An attacker may be able to cause execution of malicious scripting code in the browser of a user who clicks on a link to a Portwise Portal-based site. Such code would run within the security context of the target domain. This type of attack can result in non-persistent defacement of the target site, or the redirection of confidential information (i.e.: session IDs) to unauthorised third parties. Fix: Ensure all input parameters (especially "reloadFrame") are filtered sufficiently before beign echoed back to the client. References: http://www.procheckup.com/Vulnerabilities.php Credits: George Christopoulos and Jan Fry of ProCheckUp Ltd (www.procheckup.com) Legal: Copyright 2009 Procheckup Ltd. All rights reserved. Permission is granted for copying and circulating this Bulletin to the Internet community for the purpose of alerting them to problems, if and only if, the Bulletin is not edited or changed in any way, is attributed to Procheckup, and provided such reproduction and/or distribution is performed for non- commercial purposes. Any other use of this information is prohibited. Procheckup is not liable for any misuse of this information by any third party. _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/



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