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Ubuntu Security Notice USN-4038-1

Ubuntu Security Notice USN-4038-1
Posted Jun 26, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4038-1 - 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. It was discovered that bzip2 incorrectly handled certain files. An attacker could possibly use this issue to execute arbitrary code.

tags | advisory, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2016-3189, CVE-2019-12900
MD5 | be01cc6c68e2aabce92f73ab71fd60d9

Ubuntu Security Notice USN-4038-1

Change Mirror Download
=========================================================================
Ubuntu Security Notice USN-4038-1
June 26, 2019

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

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

References:
https://usn.ubuntu.com/4038-1
CVE-2016-3189, CVE-2019-12900

Package Information:
https://launchpad.net/ubuntu/+source/bzip2/1.0.6-9ubuntu0.19.04
https://launchpad.net/ubuntu/+source/bzip2/1.0.6-9ubuntu0.18.10
https://launchpad.net/ubuntu/+source/bzip2/1.0.6-8.1ubuntu0.1
https://launchpad.net/ubuntu/+source/bzip2/1.0.6-8ubuntu0.1
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