ripMIME attachment bypass filters

ripmime-attachment-filters-bypass (16867) The risk level is classified as MediumMedium Risk

Description:

ripMIME could allow a remote attacker to bypass email and content filters. ripMIME fails to properly extract specific MIME encoded data from an attachment, if the data consists of invalid characters. A remote attacker could exploit this vulnerability to bypass certain email and various filtering applications, such as antivirus programs.


Consequences:

Bypass Security

Remedy:

Upgrade to the latest version of ripMIME (1.3.2.3 or later), available from the ripMIME Web page. See References.

References:

  • ripMIME ChangeLog Web page: ripMIME CHANGELOG.
  • ripMIME Web page: PLDaniels.com - ripMIME.
  • BID-10848: ripMIME MIME Attachment Decoding Weakness
  • CVE-2004-2619: ripMIME 1.3.2.3 and earlier allows remote attackers to bypass e-mail protection via a base64 MIME encoded attachment containing invalid characters that are not properly extracted.
  • CVE-2004-2620: The MIMEH_read_headers function in ripMIME 1.3.1.0 does not properly handle trailing \r and \n characters in headers, which leads to a buffer underflow.
  • OSVDB ID: 8287: ripMIME Attachment Extraction Bypass
  • OSVDB ID: 8731: ripMIME MIMEH_read_headers() underrun
  • SA12201: ripMIME Attachment Extraction Bypass

Platforms Affected:

  • PLDaniels ripMIME prior to 1.3.2.3

Reported:

Aug 03, 2004

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.

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