Debian Security Advisory

DLA-2748-1 tnef -- LTS security update

Date Reported:
23 Aug 2021
Affected Packages:
Security database references:
In Mitre's CVE dictionary: CVE-2019-18849.
More information:

An issue has been found in tnef, a tool to unpack MIME application/ms-tnef attachments. Using emails with a crafted winmail.dat application/ms-tnef attachment might allow an attacker to change .ssh/authorized_keys.

For Debian 9 stretch, this problem has been fixed in version 1.4.12-1.2+deb9u1.

We recommend that you upgrade your tnef packages.

For the detailed security status of tnef please refer to its security tracker page at:

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: