TOCK version prior to commit 42f7f36e74088036068d62253e1d8fb26605feed. For example dfde28196cd12071fcf6669f7654be7df482b85d contains a Insecure Permissions vulnerability in Function get_package_name in the file kernel/src/tbfheader.rs, variable pub package_name: &static str, in the file process.rs that can result in A tock capsule (untrusted driver) could access arbitrary memory by using only safe code. This vulnerability appears to have been fixed in commit 42f7f36e74088036068d62253e1d8fb26605feed.
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.
Affected Software
| Name |
Vendor |
Start Version |
End Version |
| Tock |
Tockos |
* |
1.2 (excluding) |
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