CVE-2010-1885
Description
The MPC::HexToNum function in helpctr.exe in Microsoft Windows Help and Support Center in Windows XP and Windows Server 2003 does not properly handle malformed escape sequences, which allows remote attackers to bypass the trusted documents whitelist (fromHCP option) and execute arbitrary commands via a crafted hcp:// URL, aka "Help Center URL Validation Vulnerability."
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Exploits
Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.
Exploit-DB
Microsoft Help Center - Cross-Site Scripting / Command Execution (MS10-042) (Metasploit)
Microsoft Windows Help Centre Handles - Malformed Escape Sequences Incorrectly (MS03-044)
Metasploit modules
OS impact
Windows Affected 2 releases
| Version | Status | Fixed in |
|---|---|---|
| - | Affected | — |
| — | Affected | — |
References
- http://archives.neohapsis.com/archives/fulldisclosure/2010-06/0197.html
- http://blogs.technet.com/b/msrc/archive/2010/06/10/windows-help-vulnerability-disclosure.aspx
- http://blogs.technet.com/b/srd/archive/2010/06/10/help-and-support-center-vulnerability-full-disclosure-posting.aspx
- http://secunia.com/advisories/40076
- http://www.exploit-db.com/exploits/13808
- http://www.kb.cert.org/vuls/id/578319
- http://www.microsoft.com/technet/security/advisory/2219475.mspx
- http://www.securityfocus.com/archive/1/511774/100/0/threaded
- http://www.securityfocus.com/archive/1/511783/100/0/threaded
- http://www.securityfocus.com/bid/40725
- http://www.securitytracker.com/id?1024084
- http://www.us-cert.gov/cas/techalerts/TA10-194A.html
- http://www.vupen.com/english/advisories/2010/1417
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-042
- https://exchange.xforce.ibmcloud.com/vulnerabilities/59267
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11733
- http://archives.neohapsis.com/archives/fulldisclosure/2010-06/0197.html
- http://blogs.technet.com/b/msrc/archive/2010/06/10/windows-help-vulnerability-disclosure.aspx
- http://blogs.technet.com/b/srd/archive/2010/06/10/help-and-support-center-vulnerability-full-disclosure-posting.aspx
- http://secunia.com/advisories/40076
- http://www.exploit-db.com/exploits/13808
- http://www.kb.cert.org/vuls/id/578319
- http://www.microsoft.com/technet/security/advisory/2219475.mspx
- http://www.securityfocus.com/archive/1/511774/100/0/threaded
- http://www.securityfocus.com/archive/1/511783/100/0/threaded
CWEs
CWE-78
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.