|Description||In Roundcube Webmail 1.3.4, 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.|
|Source||CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)|
|NVD severity||medium (attack range: remote)|
Vulnerable and fixed packages
The table below lists information on source packages.
|roundcube (PTS)||stretch (security), stretch||1.2.3+dfsg.1-4+deb9u3||vulnerable|
|bullseye, sid, buster||1.3.8+dfsg.1-2||vulnerable|
The information below is based on the following data on fixed versions.
|Package||Type||Release||Fixed Version||Urgency||Origin||Debian Bugs|
[buster] - roundcube <ignored> (Relies on php-crypt-gpg, not in buster)
[stretch] - roundcube <ignored> (Relies on php-crypt-gpg, not in stretch. Old version in 1.3 doesn't verify signature anyway)