[USN-6677-1] libde265 vulnerabilities

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==========================================================================
Ubuntu Security Notice USN-6677-1
March 05, 2024

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

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

- Ubuntu 23.10
- Ubuntu 22.04 LTS
- 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 dereference invalid
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. This issue only affected Ubuntu 20.04 LTS and Ubuntu 22.04 LTS.
(CVE-2023-27102)

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, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 22.04 LTS.
(CVE-2023-27103)

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-2023-43887, CVE-2023-47471,
CVE-2023-49465, CVE-2023-49467, CVE-2023-49468)

Update instructions:

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

Ubuntu 23.10:
  libde265-0                      1.0.12-2ubuntu0.1

Ubuntu 22.04 LTS:
  libde265-0                      1.0.8-1ubuntu0.3

Ubuntu 20.04 LTS:
  libde265-0                      1.0.4-1ubuntu0.4

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
  libde265-0                      1.0.2-2ubuntu0.18.04.1~esm4

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
  libde265-0                      1.0.2-2ubuntu0.16.04.1~esm4

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

References:
  https://ubuntu.com/security/notices/USN-6677-1
  CVE-2023-27102, CVE-2023-27103, CVE-2023-43887, CVE-2023-47471,
  CVE-2023-49465, CVE-2023-49467, CVE-2023-49468

Package Information:
  https://launchpad.net/ubuntu/+source/libde265/1.0.12-2ubuntu0.1
  https://launchpad.net/ubuntu/+source/libde265/1.0.8-1ubuntu0.3
  https://launchpad.net/ubuntu/+source/libde265/1.0.4-1ubuntu0.4