Secunia Research: Lotus Notes UUE File Handling Buffer Overflow

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                 Secunia Research 10/02/2006

       - Lotus Notes UUE File Handling Buffer Overflow  -

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Table of Contents

Affected Software…1
Severity…2
Description of Vulnerability…3
Solution…4
Time Table…5
Credits…6
References…7
About Secunia…8
Verification…9

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1) Affected Software

• Lotus Notes 6.5.4
• Lotus Notes 7.0

Other versions may also be affected.

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2) Severity

Rating: Highly Critical
Impact: System access
Where: Remote

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3) Description of Vulnerability

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

The vulnerability is caused due to a boundary error in uudrdr.dll when
handling an UUE file containing an encoded file with an overly long
filename. This can be exploited to cause a stack-based buffer
overflow.

Suucessful exploitation allows execution of arbitrary code when a
malicious UUE file is opened in the Notes attachment viewer.

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4) Solution

Update to version 6.5.5 or 7.0.1.

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5) Time Table

05/08/2005 - Initial vendor notification.
05/08/2005 - Initial vendor response.
10/02/2006 - Public disclosure.

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6) Credits

Discovered by Tan Chew Keong, Secunia Research.

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7) References

The Common Vulnerabilities and Exposures (CVE) project has assigned
candidate number CAN-2005-2618 for the vulnerability.

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8) About Secunia

Secunia collects, validates, assesses, and writes advisories regarding
all the latest software vulnerabilities disclosed to the public. These
advisories are gathered in a publicly available database at the
Secunia website:

http://secunia.com/

Secunia offers services to our customers enabling them to receive all
relevant vulnerability information to their specific system
configuration.

Secunia offers a FREE mailing list called Secunia Security Advisories:

http://secunia.com/secunia_security_advisories/

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9) Verification

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2005-36/advisory/

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

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