Severity
Unknown
Vendor
Canonical Ubuntu
Versions Affected
- Canonical Ubuntu 22.04
Description
USN-6851-1 fixed vulnerabilities in Netplan. The update lead to the discovery of a regression in netplan which caused systemctl enable to fail on systems where systemd is not running. This update fixes the problem. We apologize for the inconvenience. Original advisory details: Andreas Hasenack discovered that netplan incorrectly handled the permissions for netdev files containing wireguard configuration. An attacker could use this to obtain wireguard secret keys. It was discovered that netplan configuration could be manipulated into injecting arbitrary commands while setting up network interfaces. An attacker could use this to execute arbitrary commands or escalate privileges. Update Instructions: Run `sudo pro fix USN-6851-2` to fix the vulnerability. The problem can be corrected by updating your system to the following package versions: libnetplan-dev – 0.104-0ubuntu2~20.04.6 libnetplan0 – 0.104-0ubuntu2~20.04.6 netplan.io – 0.104-0ubuntu2~20.04.6 No subscription required
Affected Cloud Foundry Products and Versions
Severity is unknown unless otherwise noted.
- cflinuxfs4
- All versions prior to 1.99.0
- Jammy Stemcells
- 1.x versions prior to 1.486
- All other stemcells not listed.
- CF Deployment
- All versions with Jammy Stemcells prior to 1.486
Mitigation
Users of affected products are strongly encouraged to follow the mitigations below.
The Cloud Foundry project recommends upgrading the following releases:
- cflinuxfs4
- Upgrade all versions to 1.99.0 or greater
- Jammy Stemcells
- Upgrade 1.x versions to 1.486 or greater
- All other stemcells should be upgraded to the latest version available on bosh.io.
- CF Deployment
- For all versions, upgrade Jammy Stemcells to 1.486 or greater
References
History
2024-07-25: Initial vulnerability report published.
