Ubuntu Security Notice USN-4505-1 ≈ Packet Storm
Ubuntu Security Notice USN-4505-1
September 16, 2020
libphp-phpmailer vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.04 LTS
Summary:
Attachments with specially crafted filenames could bypass filename-based
mail attachment filters.
Software Description:
- libphp-phpmailer: full featured email transfer class for PHP
Details:
Elar Lang discovered that PHPMailer did not properly escape double quote
characters in filenames. A remote attacker could possibly exploit this
with a crafted filename to bypass attachment filters that are based on
matching filename extensions. (CVE-2020-13625)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 18.04 LTS:
libphp-phpmailer 5.2.14+dfsg-2.3+deb9u2build0.18.04.1
In general, a standard system update will make all the necessary changes.
References:
https://usn.ubuntu.com/4505-1
CVE-2020-13625
Package Information:
https://launchpad.net/ubuntu/+source/libphp-phpmailer/5.2.14+dfsg-2.3+deb9u2build0.18.04.1
Gloss