Home/CVE/The showHelp() function in Microsoft Internet Explorer 5.01, 5.5, and 6.0 supports certain types of pluggable protocols
CVE

CVE-2003-1328

The showHelp() function in Microsoft Internet Explorer 5.01, 5.5, and 6.0 supports certain types of pluggable protocols

The showHelp() function in Microsoft Internet Explorer 5.01, 5.5, and 6.0 supports certain types of pluggable protocols that allow remote attackers to bypass the cross-domain security model and execute arbitrary code, aka "Improper Cross Domain Security Validation with ShowHelp functionality.".

HIGH · CVSS 7.5 EPSS 0.42487
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  • EPSS ≥ 0.10 - elevated exploitation probability
  • EPSS percentile: top 2% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules2 YARA rules0
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Affected Products & Versions

2
microsoft ieall versions
microsoft internet explorerall versions
⚠

Public Exploits & PoCs

1
remoteMicrosoft Internet Explorer 5 - ShowHelp Arbitrary Command Executionverified
◈

Sigma Hunt Rules

2
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productmediumInternet Explorer DisableFirstRunCustomize Enabled
productmediumInternet Explorer Autorun Keys Modification
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Scoring & Timeline

7.5
HIGH · CVSS v2 (legacy) · cve@mitre.org
View on NVD
This CVE predates CVSS v3; the legacy v2 score is shown so triage still has a severity to work with.
v2 Vector
AV:N/AC:L/Au:N/C:P/I:P/A:P
Published to NVD19 Feb 2003 · 05:00 AM
🔗

References & Sources

7
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://archives.neohapsis.com/archives/bugtraq/2003-02/0083.html
http://www.ciac.org/ciac/bulletins/n-038.shtml
http://www.iss.net/security_center/static/11259.phpVendor Advisory
http://www.kb.cert.org/vuls/id/400577US Government Resource
http://www.securityfocus.com/bid/6780
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2003/ms03-004
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