pithos before 0.3.5 allows overwrite of arbitrary files via symlinks.
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 |
|---|---|---|---|
| Pithos | Pithos_project | * | 0.3.5 (excluding) |
| Pithos | 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
- https://access.redhat.com/security/cve/cve-2010-4817
- https://bugs.launchpad.net/pithos/%2Bbug/667896
- https://people.canonical.com/~ubuntu-security/cve/2010/CVE-2010-4817.html
- https://security-tracker.debian.org/tracker/CVE-2010-4817
- https://www.openwall.com/lists/oss-security/2011/08/19/10
- https://access.redhat.com/security/cve/cve-2010-4817
- https://bugs.launchpad.net/pithos/%2Bbug/667896
- https://people.canonical.com/~ubuntu-security/cve/2010/CVE-2010-4817.html
- https://security-tracker.debian.org/tracker/CVE-2010-4817
- https://www.openwall.com/lists/oss-security/2011/08/19/10