JVN#40382909
Microsoft Outlook read receipt function vulnerability
Overview
Microsoft Outlook contains a vulnerability in the read receipt function.
Products Affected
- Microsoft Outlook 2003 Service Pack 3 and earlier
- Microsoft Outlook 2007 Service Pack 1 and earlier
Description
Microsoft Outlook contains a vulnerability in the read receipt function. A read receipt may be sent unintentionally, notifying the sender that the email was received.
Impact
A spam distributor may use this information to determine whether an email address is valid or not.
Solution
Upgrade the Software
Upgrade Outlook or apply a Service Pack according to the information provided by the developer.
References
JPCERT/CC Addendum
This JVN publication was delayed to 2011/06/15 after the developer fix was developed. From the fiscal year 2011, JPCERT/CC is using a new vendor coordination procedure. This new procedure came from the recommendation of the fiscal year 2010 "Study Group on Information System Vulnerability Handling" aimed at more timely JVN publications.
Vulnerability Analysis by JPCERT/CC
Analyzed on 2011.06.15
| Measures | Conditions | Severity |
|---|---|---|
| Access Required | can be attacked over the Internet using packets |
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| Authentication | anonymous or no authentication (IP addresses do not count) |
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| User Interaction Required | the user must be convinced to take a standard action that does not feel harmful to most users, such as click on a link or view a file |
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| Exploit Complexity | some expertise and/or luck required (most buffer overflows, guessing correctly in small space, expertise in Windows function calls) |
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Credit
Ayako Kozakai of NTT DATA SECURITY CORPORATION reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
Other Information
| JPCERT Alert | |
| JPCERT Reports | |
| CERT Advisory |
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| CPNI Advisory |
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| TRnotes |
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| CVE |
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| JVN iPedia |
JVNDB-2011-000040 |