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http://bugs.exim.org/show_bug.cgi?id=1390 Summary: Long Incoming Header Lines Corrupt Message header Product: Exim Version: 4.80 Platform: x86-64 OS/Version: Linux Status: NEW Severity: bug Priority: medium Component: Mail Receipt AssignedTo: [email protected] ReportedBy: [email protected] CC: [email protected] Long incoming header lines (>1000 characters) cause the Header to be split and the header block to be prematurely terminated, corrupting the message. Here's a snippet of the header block sent in a message by Critical Path: X-CTCH-Spam: =?utf-8?B?VW5rbm93bm4xNzUscnVsZXM9TEVPX09CRlVfU1VCSl9SRSwgX19CT1VOQ0VfQ0hBTExFTkdFX1NVQkosIF9fQk9VTkNFX05EUl9TVUJKX0VYRU1QVCwgX19IQVNfRlJPTSwgX19QSElTSF9GUk9NMiwgX19GUkFVRF9XRUJNQUlMX0ZST00sIF9fQ1QsIF9fQ1RZUEVfTVVMVElQQVJUX0FMVCwgX19DVFlQRV9IQVNfQk9VTkRBUlksIF9fQ1RZUEVfTVVMVElQQVJULCBDVFlQRV9NVUxUSVBBUlRfTk9fUVVPVEUsIF9fSEFTX1hfTUFJTEVSLCBfX0lOX1JFUF9UTywgX19IQVNfTVNHSUQsIF9fU0FORV9NU0dJRCwgX19NU0dJRF9BUFBMRU1BSUwsIF9fVE9fTUFMRk9STUVEXzIsIF9fQ1RFLCBfX01JTUVfVkVSU0lPTiwgTUlNRV9MT1dFUl9DQVNFLCBfX0FOWV9VUkksIF9fVVJJX05PX1BBVEgsIF9fU1RPQ0tfUEhSQVNFXzI0LCBfX1NUT0NLX1BIUkFTRV82LCBfX1NVQkpfQUxQSEFfTkVHQVRFLCBfX0lOVF9QUk9EX0xPQywgX19ISUdIQklUUywgU1VQRVJMT05HX0xJTkUsIF9fRk9SV0FSREVEX01TRywgX19IQVNfSFRNTCwgQk9EWVRFWFRQX1NJWkVfMzAwMF9MRVNTLCBCT0RZX1NJWkVfMzAwMF8zOTk5LCBCT0RZVEVYVEhfU0laRV8xMDAwMF9MRVNTLCBfX01JTUVfSFRNTCwgX19UQUdfRVhJU1RTX0hUTUwsIF9fU1RZTEVfUkFUV0FSRV9ORUcsIF9fUkROU19QT09MRURfNywgX19SRE5TX0JST0FEQkFORF8zLCBfX1VSSV9OUywgU1hMX0lQX0RZTkFNSUNbMTc1LjIxNC4yMDcuOTAuZnVyXSw X-tvScience-SendingHost: 65.20.0.122 smtpout02.bt.lon5.cpcloud.co.uk us gSFRNTF81MF83MCwgQk9EWV9TSVpFXzUwMDBfTEVTUywgUkROU19CUk9BREJBTkQsIFJETlNfUE9PTEVELCBSRE5TX1NVU1BfU1BFQ0lGSUMsIF9fUEhJU0hfRlJPTSwgUkROU19TVVNQLCBfX0ZSQVVEX1dFQk1BSUwsIEJPRFlfU0laRV83MDAwX0xFU1MHA8AB?= X-Junkmail-Premium-Raw: ... The "X-CTCH-Spam:" header has been chopped at 1000 characters and then an 'add_header' ACL instruction has placed a new locally generated header, breaking up the header block. It's not immediately clear, but the first section of the "X-CTCH-Spam:" header is a single line. Then there is a CR, followed by the "X-tvScience-SendingHost:" header added by an ACL. Next an empty line. Next presumably the remains of the "X-CTCH-Spam:" header. Finally there are further headers, starting with "X-Junkmail-Premium-Raw:", which are omitted for brevity. the exim version is: "Exim version 4.80 #2 built 02-Jan-2013 19:40:19" as supplied by Debian wheezy. -- Configure bugmail: http://bugs.exim.org/userprefs.cgi?tab=email -- ## List details at https://lists.exim.org/mailman/listinfo/exim-dev Exim details at http://www.exim.org/ ##
