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Category:   Application (Generic)  >   IBM iNotes and Domino Vendors:   IBM
IBM Lotus Notes Heap Overflows in EML Reader Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1019842
SecurityTracker URL:  http://securitytracker.com/id/1019842
CVE Reference:   CVE-2007-5399   (Links to External Site)
Date:  Apr 14 2008
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 6.0, 6.5, 7.0, 8.0, 8.0.1
Description:   A vulnerability was reported in IBM Lotus Notes in the EML reader. A remote user can cause arbitrary code to be executed on the target user's system.

A remote user can create a specially crafted e-mail message that, when viewed by the target user, will trigger a buffer overflow and execute arbitrary code on the target system. The code will run with the privileges of the target user.

The vulnerability resides in 'emlsr.cll' and 'mimesr.dll', depending on the version of Lotus Notes.

Certain headers (including "To:", "Cc:", "Bcc:", "From:", "Date:", "Subject:", "Priority:", "Importance:", and "X-MSMail-Priority:") in EML files can trigger a heap overflow.

RFC2047 encoded-words in headers can trigger a heap overflow.

A filename based on the subject in an EML file can trigger a heap overflow.

The vendor was notified on August 11, 2007.

The vendor has assigned SPRs PRAD78SMQM and PRAD78SN3A to this vulnerability.

Carsten Eiram of Secunia Research reported this vulnerability.

Impact:   A remote user can create an e-mail message that, when viewed by the target user, will execute arbitrary code on the target user's system.
Solution:   The vendor has issued a patch, available via IBM Support.

The vendor's advisory is available at:

http://www-1.ibm.com/support/docview.wss?uid=swg21298453

Vendor URL:  www-1.ibm.com/support/docview.wss?uid=swg21298453 (Links to External Site)
Cause:   Boundary error
Underlying OS:  Windows (Any)

Message History:   None.


 Source Message Contents

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

====================================================================== 
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.

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