Puppet before 3.3.3 and 3.4 before 3.4.1 and Puppet Enterprise (PE) before 2.8.4 and 3.1 before 3.1.1 allows local users to overwrite arbitrary files via a symlink attack on unspecified files.
Weakness
The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Puppet | Puppetlabs | 3.0.0 (including) | 3.3.2 (including) |
| Puppet | Puppetlabs | 3.4.0 (including) | 3.4.1 (excluding) |
| Puppet | Ubuntu | devel | * |
| Puppet | Ubuntu | lucid | * |
| Puppet | Ubuntu | precise | * |
| Puppet | Ubuntu | quantal | * |
| Puppet | Ubuntu | raring | * |
| Puppet | Ubuntu | saucy | * |
| Puppet | Ubuntu | upstream | * |
Potential Mitigations
- Follow the principle of least privilege when assigning access rights to entities in a software system.
- Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.
Related Attack Patterns
- https://cwe.mitre.org/data/definitions/132.html
- https://cwe.mitre.org/data/definitions/17.html
- https://cwe.mitre.org/data/definitions/35.html
- https://cwe.mitre.org/data/definitions/76.html
References
- http://puppetlabs.com/security/cve/cve-2013-4969
- http://secunia.com/advisories/56253
- http://secunia.com/advisories/56254
- http://www.debian.org/security/2013/dsa-2831
- http://www.ubuntu.com/usn/USN-2077-1
- http://puppetlabs.com/security/cve/cve-2013-4969
- http://secunia.com/advisories/56253
- http://secunia.com/advisories/56254
- http://www.debian.org/security/2013/dsa-2831
- http://www.ubuntu.com/usn/USN-2077-1