USN-4038-3: bzip2 regression

USN-4038-3: bzip2 regression

bzip2 vulnerability

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

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

• USN-4038-1
• LP: 1834494

Source: USN-4038-3: bzip2 regression