==========================================================================
Ubuntu Security Notice USN-5619-1
September 20, 2022

tiff vulnerabilities
==========================================================================

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

- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- 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 was not properly performing the calculation
of data that would eventually be used as a reference for bound-checking
operations. An attacker could possibly use this issue to cause a denial of
service or to expose sensitive information. This issue only affected Ubuntu
18.04 LTS. (CVE-2020-19131)

It was discovered that LibTIFF was not properly terminating a function
execution when processing incorrect data. An attacker could possibly use
this issue to cause a denial of service or to expose sensitive information.
This issue only affected Ubuntu 18.04 LTS. (CVE-2020-19144)

It was discovered that LibTIFF did not properly manage memory under certain
circumstances. If a user were tricked into opening a specially crafted TIFF
file using tiffinfo tool, an attacker could possibly use this issue to
cause a denial of service. This issue only affected Ubuntu 20.04 LTS and
Ubuntu 22.04 LTS. (CVE-2022-1354)

It was discovered that LibTIFF did not properly manage memory under certain
circumstances. If a user were tricked into opening a specially crafted TIFF
file using tiffcp tool, an attacker could possibly use this issue to     
cause a denial of service. (CVE-2022-1355)

It was discovered that LibTIFF was not properly performing checks to avoid
division calculations where the denominator value was zero, which could
lead to an undefined behaviour situation via a specially crafted file. An
attacker could possibly use this issue to cause a denial of service.
(CVE-2022-2056, CVE-2022-2057, CVE-2022-2058)

Update instructions:

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

Ubuntu 22.04 LTS:
  libtiff-opengl                  4.3.0-6ubuntu0.1
  libtiff-tools                   4.3.0-6ubuntu0.1
  libtiff5                        4.3.0-6ubuntu0.1
  libtiffxx5                      4.3.0-6ubuntu0.1

Ubuntu 20.04 LTS:
  libtiff-opengl                  4.1.0+git191117-2ubuntu0.20.04.5
  libtiff-tools                   4.1.0+git191117-2ubuntu0.20.04.5
  libtiff5                        4.1.0+git191117-2ubuntu0.20.04.5
  libtiffxx5                      4.1.0+git191117-2ubuntu0.20.04.5

Ubuntu 18.04 LTS:
  libtiff-opengl                  4.0.9-5ubuntu0.7
  libtiff-tools                   4.0.9-5ubuntu0.7
  libtiff5                        4.0.9-5ubuntu0.7
  libtiffxx5                      4.0.9-5ubuntu0.7

Ubuntu 16.04 ESM:
  libtiff-opengl                  4.0.6-1ubuntu0.8+esm4
  libtiff-tools                   4.0.6-1ubuntu0.8+esm4
  libtiff5                        4.0.6-1ubuntu0.8+esm4
  libtiffxx5                      4.0.6-1ubuntu0.8+esm4

Ubuntu 14.04 ESM:
  libtiff-opengl                  4.0.3-7ubuntu0.11+esm4
  libtiff-tools                   4.0.3-7ubuntu0.11+esm4
  libtiff5                        4.0.3-7ubuntu0.11+esm4
  libtiffxx5                      4.0.3-7ubuntu0.11+esm4

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

References:
  https://ubuntu.com/security/notices/USN-5619-1
  CVE-2020-19131, CVE-2020-19144, CVE-2022-1354, CVE-2022-1355,
  CVE-2022-2056, CVE-2022-2057, CVE-2022-2058

Package Information:
  https://launchpad.net/ubuntu/+source/tiff/4.3.0-6ubuntu0.1
  https://launchpad.net/ubuntu/+source/tiff/4.1.0+git191117-2ubuntu0.20.04.5
  https://launchpad.net/ubuntu/+source/tiff/4.0.9-5ubuntu0.7