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Security Intelligence Center
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Short Name

SMTP:OVERFLOW:FILENAME

Severity

High

Recommended

No

Category

SMTP

Release Date

2003/04/22

Update Number

1213

Supported Platforms

di-5.3+, idp-4.0+, isg-3.0+, j-series-9.5+, mx-9.4+, srx-9.2+, srx-branch-9.4+, vsrx-12.1+

SMTP: Attachment Filename Overflow


This protocol anomaly detects an SMTP content-disposition filename that exceeds the user-defined maximum. The default number of bytes in a content-disposition filename is 128; you can change this setting in the Sensor Settings Rulebase>Protocol Thresholds and Configuration>SMTP>Maximum length of the value for content-disposition's filename attribute.

Extended Description

The default size of a Content-Disposition file name is 128 bytes. An SMTP Content-Disposition file name that exceeds the user-defined maximum length is a protocol anomaly and should be detected.

References

  • URL: http://www.faqs.org/rfcs/rfc2821.html
  • URL: http://www.faqs.org/rfcs/rfc1521.html

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