152318 - valid smime signature does not verify correctly

Status: VERIFIED DUPLICATE of bug 149272

(MailNews Core :: Security: S/MIME, defect, P3)

Description

[Giovanni Iachello]

From Bugzilla Helper:
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.0.0) Gecko/20020530
BuildID:    2002053012

When I send a signed smime email to a mailing list and a single user, the mail
signature is not correctly verified. When checking the message source (Ctrl-U) I
noticed that the MIME subsection headers are strangely "formatted" (see
additional information). 

Reproducible: Always
Steps to Reproduce:
1. Get a personal SMIME certificate
2. Send a signed email to yourself and a mailing list you belong to
3. Check whether the signature on the mailing list message is valid

Actual Results:  The pencil icon on the received message, indicating the smime
signature, is broken.

Expected Results:  The pencil icon, indicating the smime signature, should show
that the signature was correctly verified.

The following two snippets show what arrives to the recipient of the same
message which was sent both to a user and a mailing list. In the first case the
recipient is the single user, and the signature is valid. In the second, it is
an MS Exchange mailing list, and Mozilla shows that the signature is invalid. As
you can see, in the second snippet, the Content-type headers are formatted and
the signature obviously does not verify correctly.

The same message signature is correctly verified with MS Outlook.


[...]
To: Giovanni <[e-mail]>, vox
 <[e-mail]>
[...]

--------------ms060206030501080908030500
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 8bit

Questa è una prova di messaggio firmato

giac


--------------ms060206030501080908030500
Content-Type: application/x-pkcs7-signature; name="smime.p7s"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="smime.p7s"
Content-Description: S/MIME Cryptographic Signature

MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIJqjCC
AzMwggKcoAMCAQICAwYHCDANBgkqhkiG9w0BAQIFADCBkjELMAkGA1UEBhMCWkExFTATBgNV



--------------ms060206030501080908030500
Content-Type: text/plain;
    format=flowed;
    charset="UTF-8"
Content-Transfer-Encoding: 8bit

Questa è una prova di messaggio firmato

giac


--------------ms060206030501080908030500
Content-Type: application/x-pkcs7-signature;
    name="smime.p7s"
Content-Transfer-Encoding: base64
Content-Disposition: attachment;
    filename="smime.p7s"
Content-Description: S/MIME Cryptographic Signature

MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIJqjCC
AzMwggKcoAMCAQICAwYHCDANBgkqhkiG9w0BAQIFADCBkjELMAkGA1UEBhMCWkExFTATBgNV

Comment 1

[John Unruh]

S/MIME

Comment 2

[Charles Rosendahl]

Can you edit the mail preferences under composition and check the quoted
printable option to see if that fixes your problem?  I am curious to see if this
is the same bug.

thanks

*** This bug has been marked as a duplicate of 149272 ***

Comment 3

[Charles Rosendahl]

.