[USN-6617-1] libde265 vulnerabilities

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==========================================================================
Ubuntu Security Notice USN-6617-1
January 30, 2024

libde265 vulnerabilities
==========================================================================

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

- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS (Available with Ubuntu Pro)
- Ubuntu 16.04 LTS (Available with Ubuntu Pro)

Summary:

Several security issues were fixed in libde265.

Software Description:
- libde265: Open H.265 video codec implementation

Details:

It was discovered that libde265 could be made to write out of bounds. If a
user or automated system were tricked into opening a specially crafted
file, an attacker could possibly use this issue to cause a denial of
service or execute arbitrary code. This issue only affected Ubuntu 16.04
LTS and Ubuntu 18.04 LTS. (CVE-2020-21594)

It was discovered that libde265 could be made to write out of bounds. If a
user or automated system were tricked into opening a specially crafted
file, an attacker could possibly use this issue to cause a denial of
service or execute arbitrary code. (CVE-2020-21595, CVE-2020-21596,
CVE-2020-21599, CVE-2020-21600, CVE-2020-21601, CVE-2020-21602,
CVE-2020-21603, CVE-2020-21604, CVE-2020-21605)

It was discovered that libde265 did not properly manage memory. If a user
or automated system were tricked into opening a specially crafted file, an
attacker could possibly use this issue to cause a denial of service or
execute arbitrary code. This issue only affected Ubuntu 20.04 LTS.
(CVE-2020-21597, CVE-2020-21598, CVE-2020-21606, CVE-2021-36408)

Update instructions:

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

Ubuntu 20.04 LTS:
  libde265-0                      1.0.4-1ubuntu0.1

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
  libde265-0                      1.0.2-2ubuntu0.18.04.1~esm1

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
  libde265-0                      1.0.2-2ubuntu0.16.04.1~esm1

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

References:
  https://ubuntu.com/security/notices/USN-6617-1
  CVE-2020-21594, CVE-2020-21595, CVE-2020-21596, CVE-2020-21597,
  CVE-2020-21598, CVE-2020-21599, CVE-2020-21600, CVE-2020-21601,
  CVE-2020-21602, CVE-2020-21603, CVE-2020-21604, CVE-2020-21605,
  CVE-2020-21606, CVE-2021-36408

Package Information:
  https://launchpad.net/ubuntu/+source/libde265/1.0.4-1ubuntu0.1