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Ubuntu Security Notice USN-7040-1
September 26, 2024

configobj vulnerability

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

• Ubuntu 22.04 LTS
• Ubuntu 20.04 LTS
• Ubuntu 18.04 LTS
• Ubuntu 16.04 LTS

Summary:

ConfigObj could be made to crash if it received specially crafted input.

Software Description:

• configobj: simple but powerful config file reader and writer for Python

Details:

It was discovered that ConfigObj contains regex that is susceptible to
catastrophic backtracking. An attacker could possibly use this issue to
cause a regular expression denial of service.

Update instructions:

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

Ubuntu 22.04 LTS
python3-configobj 5.0.6-5ubuntu0.1

Ubuntu 20.04 LTS
python3-configobj 5.0.6-4ubuntu0.1

Ubuntu 18.04 LTS
python-configobj 5.0.6-2ubuntu0.18.04.1~esm1
Available with Ubuntu Pro
python3-configobj 5.0.6-2ubuntu0.18.04.1~esm1
Available with Ubuntu Pro

Ubuntu 16.04 LTS
python-configobj 5.0.6-2ubuntu0.16.04.1~esm1
Available with Ubuntu Pro
python3-configobj 5.0.6-2ubuntu0.16.04.1~esm1
Available with Ubuntu Pro

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

References:
https://ubuntu.com/security/notices/USN-7040-1
CVE-2023-26112

Package Information:
https://launchpad.net/ubuntu/+source/configobj/5.0.6-5ubuntu0.1
https://launchpad.net/ubuntu/+source/configobj/5.0.6-4ubuntu0.1