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Ubuntu Security Notice USN-4038-3

Ubuntu Security Notice USN-4038-3
Posted Jul 4, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4038-3 - USN-4038-1 fixed a vulnerability in bzip2. The update introduced a regression causing bzip2 to incorrect raises CRC errors for some files. It was discovered that bzip2 incorrectly handled certain files. An attacker could possibly use this issue to execute arbitrary code. Various other issues were also addressed.

tags | advisory, arbitrary
systems | linux, ubuntu
MD5 | 66af3c08c662baf1ba782281363a0d52

Ubuntu Security Notice USN-4038-3

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-4038-3
July 04, 2019

bzip2 regression
==========================================================================

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:

USN-4038-1 introduced a regression in bzip2.

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

Details:

USN-4038-1 fixed a vulnerability in bzip2. The update introduced a regression causing
bzip2 to incorrect raises CRC errors for some files.

We apologize for the inconvenience.

Original advisory details:

It was discovered that bzip2 incorrectly handled certain files.
An attacker could possibly use this issue to execute arbitrary code.

Update instructions:

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

Ubuntu 19.04:
bzip2 1.0.6-9ubuntu0.19.04.1
libbz2-1.0 1.0.6-9ubuntu0.19.04.1

Ubuntu 18.10:
bzip2 1.0.6-9ubuntu0.18.10.1
libbz2-1.0 1.0.6-9ubuntu0.18.10.1

Ubuntu 18.04 LTS:
bzip2 1.0.6-8.1ubuntu0.2
libbz2-1.0 1.0.6-8.1ubuntu0.2

Ubuntu 16.04 LTS:
bzip2 1.0.6-8ubuntu0.2
libbz2-1.0 1.0.6-8ubuntu0.2

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

References:
https://usn.ubuntu.com/4038-3
https://usn.ubuntu.com/4038-1
https://launchpad.net/bugs/1834494

Package Information:
https://launchpad.net/ubuntu/+source/bzip2/1.0.6-9ubuntu0.19.04.1
https://launchpad.net/ubuntu/+source/bzip2/1.0.6-9ubuntu0.18.10.1
https://launchpad.net/ubuntu/+source/bzip2/1.0.6-8.1ubuntu0.2
https://launchpad.net/ubuntu/+source/bzip2/1.0.6-8ubuntu0.2

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