Help and Support Center in Microsoft Windows XP SP1 does not properly validate HCP URLs, which allows remote attackers to execute arbitrary code via quotation marks in an hcp:// URL, which are not quoted when constructing the argument list to HelpCtr.exe.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A904
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1000
https://euvd.enisa.europa.eu/vulnerability/EUVD-2003-0897
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2004/ms04-011
http://www.us-cert.gov/cas/techalerts/TA04-104A.html
http://www.securityfocus.com/bid/10119
http://www.idefense.com/application/poi/display?id=100&type=vulnerabilities
http://www.ciac.org/ciac/bulletins/o-114.shtml
http://lists.grok.org.uk/pipermail/full-disclosure/2004-April/020065.html