[sylpheed:36707] Is Sylpheed vulnerable to Efail?

Stefan A. stefan.a at portblue.net
Sun May 20 09:09:17 JST 2018

Lately, there have been a lot of news on Efail, a vulnerability found
in many email clients which allows attackers to reveal the content of
PGP-encrypted emails:

Apparently, the bug relates to how email clients parse HTML email. The
official technical paper looked at a number of clients and found that
Claws is one of the few which is not vulnerable:

Since Sylpheed and Claws share many similarities, and since parsing of
HTML emails in Sylpheed is intentionally basic, is it safe to assume
that Sylpheed is not vulnerable to Efail?

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