[Tickets #14877] Violation of RFC 2047 in UTF-8 subject lines

[noreply at bugs.horde.org]

DO NOT REPLY TO THIS MESSAGE. THIS EMAIL ADDRESS IS NOT MONITORED.

Ticket URL: https://bugs.horde.org/ticket/14877
------------------------------------------------------------------------------
  Ticket             | 14877
  Created By         | glykos at mbg.duth.gr
  Summary            | Violation of RFC 2047 in UTF-8 subject lines
  Queue              | IMP
  Version            | 6.2.11
  Type               | Bug
  State              | Unconfirmed
  Priority           | 2. Medium
  Milestone          |
  Patch              |
  Owners             |
------------------------------------------------------------------------------


glykos at mbg.duth.gr (2018-11-24 16:41) wrote:


The UTF-encoded subject line can be split in the middle of a  
multi-byte UTF-8 character which breaks RFC 2047.

Example :

Subject:  
=?utf-8?b?zpHOnc6RzprOn86Zzp3Oqc6jzpcgzpPOmc6RIM6VzprOpM6lzqDOqc6jzpcgzpTO?=
  =?utf-8?b?mc6UzpHOms6kzpnOms6pzp0gzqPOl86czpXOmc6pzqPOlc6pzp0gzpPOmc6RIM6V?=
  =?utf-8?b?zpHOoc6Zzp3OnyDOlc6ezpHOnM6Xzp3Onw==?= 2018-19

which with strict decoding ( http://dogmamix.com/MimeHeadersDecoder/ ) gives :

Subject: ?????????? ??? ???????? ??????????? ?????????? ??? ??????  
??????? 2018-19