ViewVC UTF-7 cross-site scripting

viewvc-utf7-xss (29576)

Medium Risk

Description:

ViewVC is vulnerable to cross-site scripting, caused by improper validation of user-supplied input. A remote attacker could exploit this vulnerability to inject arbitrary UTF-7 encoded JavaScript into a Web page which would be executed in a victim's Web browser within the security context of the hosting Web site, once the page is viewed. An attacker could use this vulnerability to steal the victim's cookie-based authentication credentials.

*CVSS:

Base Score:	4.2
Access Vector:	Remote
Access Complexity:	High
Authentication:	Not Required
Confidentiality Impact:	Partial
Integrity Impact:	Partial
Availability Impact:	None
Temporal Score:	3.7
Exploitability:	High
Remediation Level:	Official-Fix
Report Confidence:	Confirmed

Consequences:

Gain Access

Remedy:

Upgrade to the latest version of ViewVC (1.0.3 or later), available from the ViewVC Web site. See References.

References:

• Full-Disclosure Mailing List, Sun Oct 15 2006 - 09:21:57 CDT : Advisory 10/2006: ViewVC Undefined Charset UTF-7 XSS Vulnerability.
• ViewVC Web site: ViewVC: Repository Browsing.
• BID-20543: ViewVC UTF-7 Charset Unspecified HTML Injection Vulnerability
• CVE-2006-5442: ViewVC 1.0.2 and earlier does not specify a charset in its HTTP headers or HTML documents, which allows remote attackers to conduct cross-site scripting (XSS) attacks that inject arbitrary UTF-7 encoded JavaScript code via a view.
• SA22395: ViewVC UTF-7 Cross-Site Scripting Vulnerability

Platforms Affected:

• ViewVC ViewVC 1.0.2

Reported:

Oct 15, 2006

The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

For corrections or additions please email xforce@iss.net

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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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