USN-4038-3: bzip2 regression

Releases

• Ubuntu 19.04
• Ubuntu 18.10
• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM

Packages

• 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

• bzip2 - 1.0.6-8.1ubuntu0.2
• libbz2-1.0 - 1.0.6-8.1ubuntu0.2

Ubuntu 16.04

• 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://launchpad.net/bugs/1834494