1. Ubuntu Security Notices
  2. USN-5733-1

USN-5733-1: FLAC vulnerabilities

Publication date

21 November 2022

Overview

Several security issues were fixed in FLAC.

Releases

Packages

  • flac - Free Lossless Audio Codec

Details

It was discovered that FLAC was not properly performing memory management
operations, which could result in a memory leak. An attacker could possibly
use this issue to cause FLAC to consume resources, leading to a denial of
service. This issue only affected Ubuntu 14.04 ESM, Ubuntu 16.04 ESM and
Ubuntu 18.04 LTS. (CVE-2017-6888)

It was discovered that FLAC was not properly performing bounds checking
operations when decoding data. If a user or automated system were tricked
into processing a specially crafted file, an attacker could possibly use
this issue to expose sensitive information or to cause FLAC to crash,
leading to a denial of service. This issue only affected Ubuntu 14.04 ESM,
Ubuntu 16.04 ESM, Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2020-0499)

It was discovered that FLAC was not properly performing bounds checking
operations when...

It was discovered that FLAC was not properly performing memory management
operations, which could result in a memory leak. An attacker could possibly
use this issue to cause FLAC to consume resources, leading to a denial of
service. This issue only affected Ubuntu 14.04 ESM, Ubuntu 16.04 ESM and
Ubuntu 18.04 LTS. (CVE-2017-6888)

It was discovered that FLAC was not properly performing bounds checking
operations when decoding data. If a user or automated system were tricked
into processing a specially crafted file, an attacker could possibly use
this issue to expose sensitive information or to cause FLAC to crash,
leading to a denial of service. This issue only affected Ubuntu 14.04 ESM,
Ubuntu 16.04 ESM, Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2020-0499)

It was discovered that FLAC was not properly performing bounds checking
operations when encoding data. If a user or automated system were tricked
into processing a specially crafted file, an attacker could possibly use
this issue to expose sensitive information or to cause FLAC to crash,
leading to a denial of service. (CVE-2021-0561)

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
22.04 jammy flac –  1.3.3-2ubuntu0.1
libflac++6v5 –  1.3.3-2ubuntu0.1
libflac8 –  1.3.3-2ubuntu0.1
20.04 focal flac –  1.3.3-1ubuntu0.1
libflac++6v5 –  1.3.3-1ubuntu0.1
libflac8 –  1.3.3-1ubuntu0.1
18.04 bionic flac –  1.3.2-1ubuntu0.1
libflac++6v5 –  1.3.2-1ubuntu0.1
libflac8 –  1.3.2-1ubuntu0.1
16.04 xenial flac –  1.3.1-4ubuntu0.1~esm1  
libflac++6v5 –  1.3.1-4ubuntu0.1~esm1  
libflac8 –  1.3.1-4ubuntu0.1~esm1  
14.04 trusty flac –  1.3.0-2ubuntu0.14.04.1+esm1  
libflac++6 –  1.3.0-2ubuntu0.14.04.1+esm1  
libflac8 –  1.3.0-2ubuntu0.14.04.1+esm1  

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References

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