IBM Lotus Domino IMAP CRAM-MD5 buffer overflow

domino-imap-crammd5-bo (33276) The risk level is classified as HighHigh Risk

Description:

IBM Lotus Domino is vulnerable to a buffer overflow, caused by improper bounds checking by the IMAP Server's CRAM-MD5 authentication function in nimap.exe. By sending a specially-crafted request containing an overly long username to TCP port 143, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the server to crash.

*CVSS:

Base Score: 7
  Access Vector: Remote
  Access Complexity: Low
  Authentication: Not Required
  Confidentiality Impact: Partial
  Integrity Impact: Partial
  Availability Impact: Partial
 
Temporal Score: 5.8
  Exploitability: Functional
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Gain Access

Remedy:

Refer to IBM Technote (FAQ) 1257028 for patch, upgrade, or suggested workaround information. See References.

References:

  • IBM Technote (FAQ) 1257028: IBM Lotus Domino IMAP Server Buffer Overflow Vulnerability.
  • ZDI-07-011: IBM Lotus Domino IMAP Server CRAM-MD5 Authentication Buffer Overflow Vulnerability.
  • BID-23172: IBM Lotus Domino IMAP Cram-MD5 Buffer Overflow Vulnerability
  • BID-23173: IBM Lotus Domino Web Access Email Message HTML Injection Vulnerability
  • CVE-2007-1675: Buffer overflow in the CRAM-MD5 authentication mechanism in the IMAP server (nimap.exe) in IBM Lotus Domino before 6.5.6 and 7.x before 7.0.2 FP1 allows remote attackers to cause a denial of service via a long username.
  • OSVDB ID: 34091: IBM Lotus Domino IMAP Server (nimap.exe) CRAM-MD5 Authentication Remote Overflow DoS
  • SA24633: IBM Lotus Domino Script Insertion and Buffer Overflows
  • SECTRACK ID: 1017823: IBM Lotus Domino IMAP Server CRAM-MD5 Username Buffer Overflow Lets Remote Users Execute Arbitrary Code

Platforms Affected:

  • IBM Lotus Domino 6.5
  • IBM Lotus Domino 7.0

Reported:

Mar 27, 2007

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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 IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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