====================================================================== Secunia Research 11/12/2006 - MailEnable IMAP Service Buffer Overflow Vulnerability - ====================================================================== 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 MailEnable Professional Edition Version 2.35. NOTE: Other versions may also be affected. ====================================================================== 2) Severity Rating: Highly Critical Impact: System Access Where: From Remote ====================================================================== 3) Vendor's Description of Software "MailEnable's mail server software provides a powerful, scalable hosted messaging platform for Microsoft Windows. MailEnable offers stability, unsurpassed flexibility and an extensive feature set which allows you to provide cost-effective mail services." Product Link: http://www.mailenable.com/default.asp ====================================================================== 4) Description of Vulnerability Secunia Research has discovered a vulnerability in MailEnable, which can be exploited by malicious people to compromise a vulnerable system. The vulnerability is caused due to a boundary error when processing data sent to the IMAP server. This can be exploited to cause a stack-based buffer overflow by first sending a command in the "Not Authenticated" state (e.g. "login" command) with a specially crafted parameter to make the IMAP service wait for more incoming data and then sending an overly long string (greater than 512 bytes). Successful exploitation allows execution of arbitrary code. ====================================================================== 5) Solution Apply hotfix ME-10025: http://www.mailenable.com/hotfix/ME-10025.EXE ====================================================================== 6) Time Table 08/12/2006 - Vendor notified. 08/12/2006 - Vendor response with hotfix information. 11/12/2006 - Public disclosure. ====================================================================== 7) Credits Discovered by JJ Reyes, Secunia Research. ====================================================================== 8) References The Common Vulnerabilities and Exposures (CVE) project has assigned CVE-2006-6423 for the vulnerability. ====================================================================== 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/2006-73/ Complete list of vulnerability reports published by Secunia Research: http://secunia.com/secunia_research/ ======================================================================