bugtraq - Secunia Research: Lotus Notes EML Reader Buffer Overflows

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Message-Id: <1208168067.7909.627.camel@ts2.intnet>
Date: Mon, 14 Apr 2008 12:14:27 +0200
From: Secunia Research <remove-vuln@...unia.com>
To: vuln@...unia.com
Cc: bugtraq@...urityfocus.com
Subject: Secunia Research: Lotus Notes EML Reader Buffer Overflows

====================================================================== 

                     Secunia Research 08/04/2008

            - Lotus Notes EML Reader Buffer Overflows -

====================================================================== 
Table of Contents

Affected Software....................................................1
Severity.............................................................2
Vendor's Description of Software.....................................3
Description of Vulnerability.........................................4
Solution.............................................................5
Time Table...........................................................6
Credits..............................................................7
References...........................................................8
About Secunia........................................................9
Verification........................................................10

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1) Affected Software 

* Lotus Notes 8.0

NOTE: Other versions may also be affected.

====================================================================== 
2) Severity 

Rating: Highly critical
Impact: System compromise
Where:  Remote

====================================================================== 
3) Vendor's Description of Software 

"Security-rich software that enables businesses to communicate,
collaborate and increase productivity."

Product Link:
http://www-306.ibm.com/software/lotus/ 

====================================================================== 
4) Description of Vulnerability

Secunia Research has discovered multiple vulnerabilities in Lotus 
Notes, which can be exploited by malicious people to compromise a 
user's system.

1) A boundary error in the EML reader (emlsr.dll) when parsing certain
headers ("To:", "Cc:", "Bcc:", "From:", "Date:", "Subject:",
"Priority:", "Importance:", and "X-MSMail-Priority:") in EML files can
be exploited to cause a heap-based buffer overflow via an overly long
string.

2) A boundary error in the EML reader (emlsr.dll) when encountering the
beginning of RFC2047 encoded-words in headers can be exploited to cause
a heap-based buffer overflow via an overly long string.

3) A boundary error in the EML reader (emlsr.dll) when parsing the text
string in RFC2047 encoded-words in headers can be exploited to cause a
heap-based buffer overflow via an overly long string.

4) A boundary error in the EML reader (emlsr.dll) when creating a
filename based on the subject in an EML file can be exploited to cause 
a heap-based buffer overflow via an overly long string.

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5) Solution 

Apply patch available from the vendor.

====================================================================== 
6) Time Table 

08/11/2007 - Vendor notified.
08/11/2007 - Vendor response.
08/04/2008 - Public disclosure.

====================================================================== 
7) Credits 

Discovered by Carsten Eiram, Secunia Research.

====================================================================== 
8) References

The Common Vulnerabilities and Exposures (CVE) project has assigned 
CVE-2007-5399 for the vulnerabilities.

====================================================================== 
9) About Secunia

Secunia offers vulnerability management solutions to corporate
customers with verified and reliable vulnerability intelligence
relevant to their specific system configuration:

http://corporate.secunia.com/

Secunia also provides a publicly accessible and comprehensive advisory
database as a service to the security community and private 
individuals, who are interested in or concerned about IT-security.

http://secunia.com/

Secunia believes that it is important to support the community and to
do active vulnerability research in order to aid improving the 
security and reliability of software in general:

http://corporate.secunia.com/secunia_research/33/

Secunia regularly hires new skilled team members. Check the URL below
to see currently vacant positions:

http://secunia.com/secunia_vacancies/

Secunia offers a FREE mailing list called Secunia Security Advisories:

http://secunia.com/secunia_security_advisories/ 

====================================================================== 
10) Verification 

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2007-92/

Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/

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