Microsoft OWA (Outlook Web Access) no-store information disclosure

microsoft-owa-nostore-info-disclosure (42301)

Low Risk

Description:

Microsoft OWA (Outlook Web Access) could allow a local attacker to obtain sensitive information, caused by the use of the no-cache directive instead of the no-store HTTP directive. By persuading a victim to view sensitive information during an OWA session, a local attacker could exploit this vulnerability to retrieve restricted data from the local host.

*CVSS:

Base Score:	1.9
Access Vector:	Local
Access Complexity:	Medium
Authentication:	None
Confidentiality Impact:	Partial
Integrity Impact:	None
Availability Impact:	None
Temporal Score:	1.5
Exploitability:	Unproven
Remediation Level:	Unavailable
Report Confidence:	Uncorroborated

Consequences:

Obtain Information

Remedy:

No remedy available as of March 6, 2010.

References:

• Microsoft Web site: Access your e-mail using Outlook Web Access.
• BID-29121: Microsoft Outlook Web Access 'no-store' HTTP Directive Information Disclosure Weakness
• CVE-2008-2143: Unspecified versions of Microsoft Outlook Web Access (OWA) use the Cache-Control: no-cache HTTP directive instead of no-store, which might cause web browsers that follow RFC-2616 to cache sensitive information.
• US-CERT VU#829876: Microsoft Outlook Web Access not may use correct HTTP directive

Platforms Affected:

• Microsoft Outlook Web Access

Reported:

May 09, 2008

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For corrections or additions please email xforce@iss.net

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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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