MDaemon POP3 server USER and APOP command buffer overflow

mdaemon-pop3-bo (28517) The risk level is classified as HighHigh Risk

Description:

MDaemon is vulnerable to a heap-based buffer overflow in the POP3 service. By sending a specially-crafted USER or APOP command containing multiple "@" characters, a remote attacker could overflow a buffer and execute arbitrary code on the system with the privileges of the POP3 service.

*CVSS:

Base Score: 10
  Access Vector: Remote
  Access Complexity: Low
  Authentication: Not Required
  Confidentiality Impact: Complete
  Integrity Impact: Complete
  Availability Impact: Complete
 
Temporal Score: 7.8
  Exploitability: Proof-Of-Concept
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Gain Access

Remedy:

Upgrade to the latest version of MDaemon (9.0.6 or later), available from the Alt-N Technologies Web site. See References.

References:

  • Alt-N Technologies Web site: Download - MDaemon.
  • INFIGO IS Security Advisory #INFIGO-2006-08-04: MDaemon POP3 server remote buffer overflow (preauth).
  • MDaemon Server v9.X Release Notes: MDaemon 9.06 - August 1, 2006.
  • BID-19651: Alt-N MDaemon Multiple Remote Pre-Authentication POP3 Buffer Overflow Vulnerabilities
  • CVE-2006-4364: Multiple heap-based buffer overflows in the POP3 server in Alt-N Technologies MDaemon before 9.0.6 allow remote attackers to cause a denial of service (daemon crash) and possibly execute arbitrary code via long strings that contain '@' characters in the (1) USER and (2) APOP commands.
  • OSVDB ID: 28125: MDaemon POP3 Server USER / APOP Command Remote Overflow
  • SA21595: MDaemon POP3 Server Buffer Overflow Vulnerabilities
  • SECTRACK ID: 1016729: MDaemon Buffer Overflow in USER and APOP Commands Lets Remote Users Execute Arbitrary Code
  • VUPEN/ADV-2006-3361: Alt-N MDaemon POP3 USER and APOP Commands Buffer Overflow Vulnerabilities

Platforms Affected:

  • Alt-N MDaemon prior to 9.0.6

Reported:

Aug 21, 2006

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