Published: 26 May 2020

qmail-verify as used in netqmail 1.06 is prone to an information disclosure vulnerability. A local attacker can test for the existence of files and directories anywhere in the filesystem because qmail-verify runs as root and tests for the existence of files in the attacker's home directory, without dropping its privileges first.

From the Ubuntu security team

It was discovered that netqmail did not properly handle certain input when validating email addresses. An attacker could use this vulnerability to cause netqmail to disclose sensitive information.



CVSS 3 base score: 5.5


Package Release Status
Launchpad, Ubuntu, Debian
Released (1.06-6.2, 1.6-6.2~deb10u1, 1.6-6.2~deb9u1, 1.6-6.2~deb8u1,,,)
Ubuntu 21.04 (Hirsute Hippo) Does not exist

Ubuntu 20.10 (Groovy Gorilla) Does not exist

Ubuntu 20.04 LTS (Focal Fossa)
Released (1.06-6.2~deb10u1build0.20.04.1)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (1.06-6.2~deb10u1build0.18.04.1)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (1.06-6.2~deb10u1build0.16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist