SecurityTracker.com
    Home    |    View Topics    |    Search    |    Contact Us    |   

SecurityTracker
Archives


 


Category:   Application (E-mail Client)  >   Pegasus Mail Vendors:   Harris, David
Pegasus Mail Buffer Overflows in Processing POP3 Mail and Displaying Message Headers Let Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1015385
SecurityTracker URL:  http://securitytracker.com/id/1015385
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Date:  Dec 20 2005
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 4.2*, 4.30PB1
Description:   A vulnerability was reported in Pegasus Mail. A remote mail server can cause arbitrary code to be executed on the target system.

A remote POP3 server can send a specially crafted reply to a connected client to trigger a stack overflow and execute arbitrary code on the target client.

A remote user can send a specially crafted e-mail messages. When the target user displays the RFC 2822 message headers, a buffer overflow may occur and arbitrary code may be executed.

The vendor was notified on December 13, 2005.

Impact:   A remote user can cause arbitrary code to be executed on the target user's system.
Solution:   The vendor has issued a fixed version (4.31), available at:

http://www.pmail.com/downloads.htm

Vendor URL:  www.pmail.com/ (Links to External Site)
Cause:   Boundary error
Underlying OS:  Windows (Any)

Message History:   None.


 Source Message Contents

Subject:  [Full-disclosure] Secunia Research: Pegasus Mail Buffer Overflow

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

                     Secunia Research 20/12/2005

   - Pegasus Mail Buffer Overflow and Off-by-One Vulnerabilities -

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

====================================================================== 
1) Affected Software 

* Pegasus Mail version 4.21a, 4.21b, and 4.21c.
* Pegasus Mail version 4.30PB1 (Public Beta 1).

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

Rating: Moderately Critical
Impact: System access
Where:  Remote

====================================================================== 
3) Description of Vulnerability

Secunia Research has discovered two vulnerabilities in Pegasus Mail,
which can be exploited by malicious people to compromise a user's
system.

1) A boundary error exists when using the reply from a POP3 server
to construct trace messages that are displayed to the user if an
error occurs when downloading emails. This can be exploited to
cause a stack-based buffer overflow via an overly long POP3 reply.

Successful exploitation allows arbitrary code execution but
requires that the user is e.g. tricked into connecting to a malicious
POP3 server.

2) An off-by-one error exists when displaying the RFC2822 message
headers of an email to the user. This can be exploited to overwrite
the least significant byte of the saved EBP via a email message
header that is 1022 bytes or longer. This allows code execution on a
Windows XP system.

Successful exploitation requires that the user is e.g. tricked
into viewing the headers of a malicious email via the 
"Message headers..." menu item in the context menu of the
email message.

The vulnerabilities have been confirmed in version 4.21c and 
4.30PB1 (Public Beta 1).

====================================================================== 
4) Solution 

Updated to version 4.31.

====================================================================== 
5) Time Table 

13/12/2005 - Initial vendor notification.
13/12/2005 - Initial vendor reply.
20/12/2005 - Public disclosure.

====================================================================== 
6) Credits 

Discovered by Tan Chew Keong, Secunia Research.

====================================================================== 
7) References

Pegasus Mail:
http://www.pmail.com/newsflash.htm#secunia

====================================================================== 
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/

====================================================================== 
9) Verification 

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2005-61/advisory/

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

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



_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/

 
 


Go to the Top of This SecurityTracker Archive Page





Home   |    View Topics   |    Search   |    Contact Us

This web site uses cookies for web analytics. Learn More

Copyright 2021, SecurityGlobal.net LLC