A LibTIFF security update has been released for Ubuntu Linux 14.04 ESM and 16.04 ESM.

USN-5841-1: LibTIFF vulnerabilities

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Ubuntu Security Notice USN-5841-1
February 02, 2023

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

- Ubuntu 16.04 ESM
- Ubuntu 14.04 ESM

Summary:

Several security issues were fixed in LibTIFF.

Software Description:
- tiff: Tag Image File Format (TIFF) library

Details:

It was discovered that LibTIFF incorrectly handled certain malformed
images. If a user or automated system were tricked into opening a
specially crafted image, a remote attacker could crash the application,
leading to a denial of service, or possibly execute arbitrary code with
user privileges. This issue was only fixed in Ubuntu 14.04 ESM.
(CVE-2019-14973, CVE-2019-17546, CVE-2020-35523, CVE-2020-35524,
CVE-2022-3970)

It was discovered that LibTIFF was incorrectly acessing a data structure
when processing data with the tiffcrop tool, which could lead to a heap
buffer overflow. An attacker could possibly use this issue to cause a
denial of service or execute arbitrary code. (CVE-2022-48281)

Update instructions:

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

Ubuntu 16.04 ESM:
libtiff-tools 4.0.6-1ubuntu0.8+esm9
libtiff5 4.0.6-1ubuntu0.8+esm9

Ubuntu 14.04 ESM:
libtiff-tools 4.0.3-7ubuntu0.11+esm6
libtiff5 4.0.3-7ubuntu0.11+esm6

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

References:
https://ubuntu.com/security/notices/USN-5841-1
CVE-2019-14973, CVE-2019-17546, CVE-2020-35523, CVE-2020-35524,
CVE-2022-3970, CVE-2022-48281