USN-6851-2: Netplan regression
24762
22 August 2024
22 August 2024
CLOSED
MEDIUM
Severity
medium
Vendor
VMware Tanzu
Versions Affected
- Canonical Ubuntu 22.04
- Cflinuxfs4
- Operations Manager Image 3.0.x
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.
Fixed VMware Products and Versions
- Cflinuxfs4
- 1.99.0 or greater
- Jammy Stemcells
- 1.486 or greater
References
https://ubuntu.com/security/notices/USN-6851-2
https://www.cloudfoundry.org/blog/usn-6851-2
https://cve.mitre.org/cgi-bin/cvename.cgi?name=usn-6851-2
History
2024-06-28: Initial vulnerability report published.