IBM Lotus Domino iCalendar functionality buffer overflow

lotus-domino-icalendar-bo (61790) The risk level is classified as HighHigh Risk


IBM Lotus Domino is vulnerable to a stack-based buffer overflow, caused by improper bounds checking by the iCalendar functionality. By sending a specially-crafted iCalendar invitation containing an overly long " ORGANIZER:mailto"iCalendar header, a remote attacker could overflow a buffer and execute arbitrary code on the system with the privileges of the nrouter.exe Domino server process.


Base Score: 7.5
  Access Vector: Network
  Access Complexity: Low
  Authentication: None
  Confidentiality Impact: Partial
  Integrity Impact: Partial
  Availability Impact: Partial
Temporal Score: 5.9
  Exploitability: Proof-of-Concept
  Remediation Level: Official-Fix
  Report Confidence: Confirmed


Gain Access


Refer to IBM Support and Downloads for patch, upgrade or suggested workaround information. See References.


  • ffensive Security Exploit Database [09-14-2010]: IBM Lotus Domino iCalendar Email Address Stack Buffer Overflow Vulnerability.
  • IBM Support and Downloads : Stack buffer overflow vulnerability in Lotus Domino iCalendar functionality.
  • MWR Labs: IBM Lotus Domino iCalendar Email Address Stack Buffer Overflow Vulnerability.
  • Offensive Security Exploit Database [04-04-2011]: IBM Lotus Domino iCalendar MAILTO Buffer Overflow.
  • ZDI-10-177: IBM Lotus Domino iCalendar MAILTO Stack Overflow Vulnerability.
  • BID-43219: IBM Lotus Domino iCalendar Remote Stack Buffer Overflow Vulnerability
  • CVE-2010-3407: Stack-based buffer overflow in the MailCheck821Address function in nnotes.dll in the nrouter.exe service in the server in IBM Lotus Domino 8.0.x before 8.0.2 FP5 and 8.5.x before 8.5.1 FP2 allows remote attackers to execute arbitrary code via a long e-mail address in an ORGANIZER:mailto header in an iCalendar calendar-invitation e-mail message, aka SPR NRBY7ZPJ9V.
  • OSVDB ID: 68040: IBM Lotus Domino nnotes.dll MailCheck821Address Function iCalendar Email Address ORGANIZER:mailto Header Remote Overflow
  • SA41433: IBM Lotus Domino iCalendar Email Address Parsing Buffer Overflow
  • SECTRACK ID: 1024448: IBM Lotus Domino iCalendar Stack Overflow in MAILTO Processing Lets Remote Users Execute Arbitrary Code

Platforms Affected:

  • IBM Lotus Domino Server 8.0
  • IBM Lotus Domino Server 8.5


Sep 14, 2010

The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

For corrections or additions please email ignore thisxforceignore this@ignore thisus.ignore thisibm.comignore this

Return to the main page