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USN-4524-1: TNEF vulnerabilities

21 September 2020

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

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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)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 16.04

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

References