Ubuntu Advantage Tools Important APT Issues Vulnerabilities USN-8555

Several security issues were fixed in Ubuntu Advantage Tools. Software Description: - ubuntu-advantage-tools: Management tools for Ubuntu Pro Details: Bilal Teke discovered that Ubuntu Advantage Tools exposed the Pro bearer token in command-line arguments when validating APT credentials. A local attacker could possibly use this issue to obtain sensitive information and gain unauthorized access to Ubuntu Pro repositories. (CVE-2026-9494) Frederick Jerusha discovered that Ubuntu Advantage Tools did not properly validate data received from the contract server when writing APT source files. An attacker could possibly use this issue to inject arbitrary APT configuration and execute arbitrary code. (CVE-2026-11386) Mateusz Gierblinski discovered that Ubuntu Advantage Tools did not properly handle symbolic links when collecting diagnostic logs. A local attacker could possibly use this issue to obtain sensitive information from files owned by the administrator. This issue only affecte... Read the Full Advisory

Several security issues were fixed in Ubuntu Advantage Tools.

Software Description:

- ubuntu-advantage-tools: Management tools for Ubuntu Pro

Bilal Teke discovered that Ubuntu Advantage Tools exposed the Pro bearer

token in command-line arguments when validating APT credentials. A local

attacker could possibly use this issue to obtain sensitive information

and gain unauthorized access to Ubuntu Pro repositories. (CVE-2026-9494)

Frederick Jerusha discovered that Ubuntu Advantage Tools did not properly

validate data received from the contract server when writing APT source

files. An attacker could possibly use this issue to inject arbitrary APT

configuration and execute arbitrary code. (CVE-2026-11386)

Mateusz Gierblinski discovered that Ubuntu Advantage Tools did not

properly handle symbolic links when collecting diagnostic logs. A local

attacker could possibly use this issue to obtain sensitive information

from files owned by the administrator. This issue only affecte...

The problem can be corrected by updating your system to the following package versions: Ubuntu 26.04 LTS ubuntu-advantage-pro 37.2ubuntu0.1 ubuntu-advantage-tools 37.2ubuntu0.1 ubuntu-pro-auto-attach 37.2ubuntu0.1 ubuntu-pro-client 37.2ubuntu0.1 ubuntu-pro-client-l10n 37.2ubuntu0.1 Ubuntu 24.04 LTS ubuntu-advantage-pro 37.2ubuntu~24.04.1 ubuntu-advantage-tools 37.2ubuntu~24.04.1 ubuntu-pro-auto-attach 37.2ubuntu~24.04.1 ubuntu-pro-client 37.2ubuntu~24.04.1 ubuntu-pro-client-l10n 37.2ubuntu~24.04.1 Ubuntu 22.04 LTS ubuntu-advantage-pro 37.2ubuntu~22.04.1 ubuntu-advantage-tools 37.2ubuntu~22.04.1 ubuntu-pro-auto-attach 37.2ubuntu~22.04.1 ubuntu-pro-client 37.2ubuntu~22.04.1 ubuntu-pro-client-l10n 37.2ubuntu~22.04.1 Ubuntu 20.04 LTS ubuntu-advantage-pro 37.1ubuntu0~20.04.1 ubuntu-advantage-tools 37.1ubuntu0~20.04.1 ubuntu-pro-auto-attach 37.1ubuntu0~20.04.1 ubuntu-pro-client 37.1ubuntu0~20.04.1 ubuntu-pro-client-l10n 37.1ubuntu0~20.04.1 Ubuntu 18.04 LTS ubuntu-advantage-pro 37.1ubuntu0~18.04.1 ubuntu-advantage-tools 37.1ubuntu0~18.04.1 ubuntu-pro-auto-attach 37.1ubuntu0~18.04.1 ubuntu-pro-client 37.1ubuntu0~18.04.1 ubuntu-pro-client-l10n 37.1ubuntu0~18.04.1 Ubuntu 16.04 LTS ubuntu-advantage-pro 37.1ubuntu0~16.04.1 ubuntu-advantage-tools 37.1ubuntu0~16.04.1 ubuntu-pro-auto-attach 37.1ubuntu0~16.04.1 ubuntu-pro-client 37.1ubuntu0~16.04.1 ubuntu-pro-client-l10n 37.1ubuntu0~16.04.1 Ubuntu 14.04 LTS ubuntu-advantage-tools 19.7ubuntu0.1 In general, a standard system update will make all the necessary changes.

CVE-2026-11386, CVE-2026-12391, CVE-2026-9494

Ubuntu Security Notice USN-8555-1

Get the latest Linux and open source security news straight to your inbox.