CVE-2008-3843

Microsoft .NET Framework - XSS

Title source: llm

Description

Request Validation (aka the ValidateRequest filters) in ASP.NET in Microsoft .NET Framework with the MS07-040 update does not properly detect dangerous client input, which allows remote attackers to conduct cross-site scripting (XSS) attacks, as demonstrated by a query string containing a "<~/" (less-than tilde slash) sequence followed by a crafted STYLE element.

References (6)

[Various Sources] http://www.procheckup.com/PDFs/bypassing-dot-NET-ValidateRequest.pdf

[Various Sources] http://www.procheckup.com/Vulnerability_PR08-20.php

[Third Party Advisory, VDB Entry] https://exchange.xforce.ibmcloud.com/vulnerabilities/44743

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/archive/1/495667/100/0/threaded

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/archive/1/496071/100/0/threaded

[Third Party Advisory] http://securityreason.com/securityalert/4193

Scores

EPSS 0.1167

EPSS Percentile 93.6%

Classification

CWE

CWE-79

Status draft

Affected Products (3)

microsoft/.net_framework

microsoft/.net_framework

microsoft/.net_framework

Timeline

Published Aug 27, 2008

Tracked Since Feb 18, 2026