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Debian LTS Advisory DLA-2748-1                [email protected]
https://www.debian.org/lts/security/                    Thorsten Alteholz
August 23, 2021                               https://wiki.debian.org/LTS
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Package        : tnef
Version        : 1.4.12-1.2+deb9u1
CVE ID         : CVE-2019-18849

An issue has been found in tnef, a tool to unpack MIME application/ms-tnef 
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

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: https://wiki.debian.org/LTS