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.
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Ubuntu Security Notice USN-4038-3
July 04, 2019
bzip2 regression
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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