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Cisco Bug: CSCvs93307 - ESA: edit-header-text filter doesn't match Regex with CR or LF on UTF encoded Subject header

Last Modified

Apr 28, 2020

Products (1)

  • Cisco Email Security Appliance

Known Affected Releases

12.5.1-037

Description (partial)

Symptom:
Using a filter such as the following will result in no matches when a UTF encoded Subject header contains these characters, and the Subject will be returned without modification:

edit-header-text("Subject", "[\\r\\n]", "");

Conditions:
Running affected AsyncOS version.
Using edit-header-text filter attempting to replace \r or \n characters.
UTF encoded Subject is sent through containing these characters.
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
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  • Known Fixed Releases
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