tnef vulnerabilities

A security issue affects these releases of Ubuntu and its
derivatives:

* Ubuntu 16.04 LTS

Summary

TNEF could be made to crash or write arbitrary files to the
filesystem.

Software Description

* tnef - Tool to unpack MIME application/ms-tnef attachments

Details

Paul Dreik discovered that TNEF incorrectly handled filenames. If
a user were tricked into opening a specially crafted email
attachment, an attacker could possibly use this issue to write
arbitrary files to the filesystem or cause TNEF crash, resulting
in a denial of service. (CVE-2019-18849)

Update instructions

The problem can be corrected by updating your system to the
following package versions:

Ubuntu 16.04 LTS
tnef - 1.4.9-1+deb8u4build0.16.04.1

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

In general, a standard system update will make all the necessary
changes.

References

* CVE-2019-18849

--- Mystic BBS v1.12 A45 (Linux/64)
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