Cisco Bug: CSCvs93307 - ESA: edit-header-text filter doesn't match Regex with CR or LF on UTF encoded Subject header
Apr 28, 2020
- Cisco Email Security Appliance
Known Affected Releases
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
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