PT-2008-5186 · Microsoft · .Net Framework+1

Published 2008-08-27 · Updated 2018-10-30 · CVE-2008-3843

Positive Technologies (AI Summary)

CVSS v2.0

4.3

Medium

Base vector

AV:N/AC:M/Au:N/C:N/I:P/A:N

Name of the Vulnerable Software and Affected Versions Microsoft .NET Framework with the MS07-040 update

Description The issue concerns a problem with Request Validation in ASP.NET, where it fails to properly detect dangerous client input. This allows remote attackers to conduct cross-site scripting (XSS) attacks. An example of such an attack involves a query string containing a "<~/" sequence followed by a crafted STYLE element.

Recommendations For Microsoft .NET Framework with the MS07-040 update, consider disabling the ValidateRequest filters as a temporary workaround until a patch is available. Restrict access to crafted STYLE elements to minimize the risk of exploitation. Avoid using the query string to pass user-input data in the affected API endpoints until the issue is resolved.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2008-3843

Affected Products

.Net Framework

Asp.Net

References · 8

• https://nvd.nist.gov/vuln/detail/CVE-2008-3843 · Security Note
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3843 · Note
• http://securityfocus.com/archive/1/496071/100/0/threaded · Note
• http://securityreason.com/securityalert/4193 · Note
• https://exchange.xforce.ibmcloud.com/vulnerabilities/44743 · Note
• http://procheckup.com/PDFs/bypassing-dot-NET-ValidateRequest.pdf · Note
• http://securityfocus.com/archive/1/495667/100/0/threaded · Note
• http://procheckup.com/Vulnerability_PR08-20.php · Note