1. Ubuntu Security Notices
  2. USN-4524-1

USN-4524-1: TNEF vulnerabilities

Publication date

21 September 2020

Overview

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

Releases

Packages

  • 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)

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

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
16.04 xenial tnef –  1.4.9-1+deb8u4build0.16.04.1

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References

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