dp-golang is a Puppet module for Go installations. Prior to 1.2.7, dp-golang could install files — including the compiler binary — with the wrong ownership when Puppet was run as root and the installed package was On macOS: Go version 1.4.3 through 1.21rc3, inclusive, go1.4-bootstrap-20170518.tar.gz, or go1.4-bootstrap-20170531.tar.gz. The user and group specified in Puppet code were ignored for files within the archive. dp-puppet version 1.2.7 will recreate installations if the owner or group of any file or directory within that installation does not match the requested owner or group
Weakness
The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors.
Potential Mitigations
- Run the code in a “jail” or similar sandbox environment that enforces strict boundaries between the process and the operating system. This may effectively restrict which files can be accessed in a particular directory or which commands can be executed by the software.
- OS-level examples include the Unix chroot jail, AppArmor, and SELinux. In general, managed code may provide some protection. For example, java.io.FilePermission in the Java SecurityManager allows the software to specify restrictions on file operations.
- This may not be a feasible solution, and it only limits the impact to the operating system; the rest of the application may still be subject to compromise.
- Be careful to avoid CWE-243 and other weaknesses related to jails.
References