Bug#926996: kmail: CVE-2019-10732: decryption based on replying to PGP or S/MIME encrypted emails
Source: kmail
Version: 4:18.08.3-1
Severity: important
Tags: security upstream
Forwarded: https://bugs.kde.org/show_bug.cgi?id=404698
Hi,
The following vulnerability was published for kmail. It was reported
upstream at [1] but at point of writing the bugreport there is not
much information available (or fix).
CVE-2019-10732[0]:
| In KDE KMail 5.2.3, an attacker in possession of S/MIME or PGP
| encrypted emails can wrap them as sub-parts within a crafted multipart
| email. The encrypted part(s) can further be hidden using HTML/CSS or
| ASCII newline characters. This modified multipart email can be re-sent
| by the attacker to the intended receiver. If the receiver replies to
| this (benign looking) email, they unknowingly leak the plaintext of
| the encrypted message part(s) back to the attacker.
If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.
For further information see:
[0] https://security-tracker.debian.org/tracker/CVE-2019-10732
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-10732
[1] https://bugs.kde.org/show_bug.cgi?id=404698
Please adjust the affected versions in the BTS as needed.
Regards,
Salvatore
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