Ubuntu Security Update USN-4038-1: bzip2 vulnerabilities

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bzip2 vulnerabilities


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

• Ubuntu 19.04
• Ubuntu 18.10
• Ubuntu 18.04 LTS
• Ubuntu 16.04 LTS

Summary


Several security issues were fixed in bzip2.

Software Description

• bzip2 - high-quality block-sorting file compressor - utilities

Details


Aladdin Mubaied discovered that bzip2 incorrectly handled certain files. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 16.04 LTS. (CVE-2016-3189)

It was discovered that bzip2 incorrectly handled certain files. An attacker could possibly use this issue to execute arbitrary code. (CVE-2019-12900)

Update instructions


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

Ubuntu 19.04
bzip2 - 1.0.6-9ubuntu0.19.04
libbz2-1.0 - 1.0.6-9ubuntu0.19.04
Ubuntu 18.10
bzip2 - 1.0.6-9ubuntu0.18.10
libbz2-1.0 - 1.0.6-9ubuntu0.18.10
Ubuntu 18.04 LTS
bzip2 - 1.0.6-8.1ubuntu0.1
libbz2-1.0 - 1.0.6-8.1ubuntu0.1
Ubuntu 16.04 LTS
bzip2 - 1.0.6-8ubuntu0.1
libbz2-1.0 - 1.0.6-8ubuntu0.1

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References

• CVE-2016-3189
• CVE-2019-12900

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