1787408 - attached digitally signed .eml shows empty body after being saved

Status: RESOLVED DUPLICATE of bug 1943021

(MailNews Core :: Security: OpenPGP, defect)

Description

[Zhai Can]

Attachment: Signing test.eml

User Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.0.0 Safari/537.36

Steps to reproduce:

Send a digitally signed plaintext email to someone
use "Forward as - Attachment" on that sent email and send it again
open the parent email and click "Save As" to save the attached child .eml to a file

Actual results:

The saved .eml file loses the body parts, and when I open it using Thunderbird, it shows empty body

Expected results:

saved .eml file should be identical to the forwarded email

Comment 1

[Zhai Can]

Attachment: Fwd - Signing test.eml

Comment 2

[Zhai Can]

(In reply to bczhc0 from comment #0)

Created attachment 9291709 [details]
Signing test.eml

User Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.0.0 Safari/537.36

Steps to reproduce:

Send a digitally signed plaintext email to someone
use "Forward as - Attachment" on that sent email and send it again
open the parent email and click "Save As" to save the attached child .eml to a file

Actual results:

The saved .eml file loses the body parts, and when I open it using Thunderbird, it shows empty body

Expected results:

saved .eml file should be identical to the forwarded email

I have expressed it incorrectly. The saved .eml doesn't lose its body part, but some PGP signature info (but still Thunderbird shows empty body when opening it). It's when I double clicked to open the attached email, and then view the source in Thunderbird, the body part is lost.

Comment 3

[Zhai Can]

Attachment: saved - Signing test.eml

one PGP signature part is lost

Comment 4

[Zhai Can]

Attachment: source.eml

This is the source of the attached email shown by Thunderbird, and the body part is lost

Comment 5

[Magnus Melin [:mkmelin]]

Better in thunderbird 102?

Comment 6

[Zhai Can]

(In reply to Magnus Melin [:mkmelin] from comment #5)

Better in thunderbird 102?

Nope, I tried the latest 102, and it's the same thing.

Comment 7

[Lukas.Wringer]

Still Affects ESR 128.6.0 as well as the Daily 136.0a1 - when forwarding a signed mail as attachment the recipient client (thunderbird) may show it as a preview below the content of the forwarding message - but opening the whole .eml either directly from the attachment or from local storage does not show any content - just a blank space. I checked with Windows as well as with Linux.

Comment 8

[Lukas.Wringer]

Also it is not just the view - you can also not print the content...

Comment 9

[Lukas.Wringer]

Looks like when exporting the attached .eml thunderbird changes the content when being opened or saved (why!?)

It not only removes the signature part it also adds an arbitrary

Content-Type: multipart/mixed; boundary="------------ID_REDACTED"
Content-Disposition: inline

into the mix and changes the boundary information

Comment 10

[Hartmut Welpmann [:welpy-cw]]

This has just been fixed in bug 1943021.