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Ubuntu Security Notice USN-4038-2

Ubuntu Security Notice USN-4038-2
Posted Jun 26, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4038-2 - USN-4038-1 fixed several vulnerabilities in bzip2. This update provides the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM. Aladdin Mubaied discovered that bzip2 incorrectly handled certain files. An attacker could possibly use this issue to cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, vulnerability
systems | linux, ubuntu
advisories | CVE-2016-3189, CVE-2019-12900
MD5 | 610ea72a3982c8d072115331d4bbdebf

Ubuntu Security Notice USN-4038-2

Change Mirror Download
=========================================================================
Ubuntu Security Notice USN-4038-2
June 26, 2019

bzip2 vulnerabilities
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 14.04 ESM
- Ubuntu 12.04 ESM

Summary:

Several security issues were fixed in bzip2.

Software Description:
- bzip2: high-quality block-sorting file compressor - utilities

Details:

USN-4038-1 fixed several vulnerabilities in bzip2. This update provides
the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.

Original advisory details:

Aladdin Mubaied discovered that bzip2 incorrectly handled certain files.
An attacker could possibly use this issue to cause a denial of service.
(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 14.04 ESM:
bzip2 1.0.6-5ubuntu0.1~esm1
lib32bz2-1.0 1.0.6-5ubuntu0.1~esm1
lib64bz2-1.0 1.0.6-5ubuntu0.1~esm1
libbz2-1.0 1.0.6-5ubuntu0.1~esm1

Ubuntu 12.04 ESM:
bzip2 1.0.6-1ubuntu0.1
lib32bz2-1.0 1.0.6-1ubuntu0.1
lib64bz2-1.0 1.0.6-1ubuntu0.1
libbz2-1.0 1.0.6-1ubuntu0.1

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

References:
https://usn.ubuntu.com/4038-2
https://usn.ubuntu.com/4038-1
CVE-2016-3189, CVE-2019-12900

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