Microsoft Exchange OWA using RSA Security SecurID authentication bypass
| exchange-owa-securid-bypass (8681) |  Low Risk |
Description:
Microsoft Exchange Server could allow remote attacker to access an OWA account without authenticating with SecurID. If a remote attacker authenticates using SecurID and logs into an email account through OWA as the same user that has been authenticated using SecurID, the attacker could log out of the primary email account and log into a different OWA account without having to re-authenticate using SecurID. An attacker could exploit this vulnerability by performing multiple login attempts to OWA after the initial error message has been displayed that notifies the user that the SecurID and NT username does not match.
Note: In addition to requiring a valid SecurID token, the attacker would also need more than one valid NT username and password to exploit this vulnerability.
Platforms Affected:
- Microsoft, Exchange Server 2000
- Microsoft, Exchange Server 5.5
- RSA, SecurID Web Agent 5
Remedy:
No remedy available as of July 4, 2009.
Consequences:
Bypass Security
References:
- BugTraq Mailing List, Thu Mar 28 2002 - 03:58:58 CST, Authentication with RSA SecurID and Outlook web access at http://archives.neohapsis.com/archives/bugtraq/2002-03/0354.html.
- BID-4390: Microsoft Outlook Web Access with RSA SecurID Authentication Bypass Vulnerability
- CVE-2002-0507: An interaction between Microsoft Outlook Web Access (OWA) with RSA SecurID allows local users to bypass the SecurID authentication for a previous user via several submissions of an OWA Authentication request with the proper OWA password for the previous user, which is eventually accepted by OWA.
Reported:
Mar 28, 2002
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