The IPTables-Parse module before 1.6 for Perl allows local users to write to arbitrary files owned by the current user.
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 |
|---|---|---|---|
| Iptables-parse_module | Iptables-parse_project | 0.5 (including) | 0.5 (including) |
| Iptables-parse_module | Iptables-parse_project | 0.6 (including) | 0.6 (including) |
| Iptables-parse_module | Iptables-parse_project | 0.7 (including) | 0.7 (including) |
| Iptables-parse_module | Iptables-parse_project | 0.8 (including) | 0.8 (including) |
| Iptables-parse_module | Iptables-parse_project | 0.9 (including) | 0.9 (including) |
| Iptables-parse_module | Iptables-parse_project | 1.0 (including) | 1.0 (including) |
| Iptables-parse_module | Iptables-parse_project | 1.1 (including) | 1.1 (including) |
| Iptables-parse_module | Iptables-parse_project | 1.3 (including) | 1.3 (including) |
| Iptables-parse_module | Iptables-parse_project | 1.3.1 (including) | 1.3.1 (including) |
| Iptables-parse_module | Iptables-parse_project | 1.4 (including) | 1.4 (including) |
| Iptables-parse_module | Iptables-parse_project | 1.5 (including) | 1.5 (including) |
| Iptables-parse_module | Iptables-parse_project | 1.6 (including) | 1.6 (including) |
| Iptables-parse_module | Iptables-parse_project | 1.6.1 (including) | 1.6.1 (including) |
| Libiptables-parse-perl | Ubuntu | esm-infra-legacy/trusty | * |
| Libiptables-parse-perl | Ubuntu | precise | * |
| Libiptables-parse-perl | Ubuntu | trusty | * |
| Libiptables-parse-perl | Ubuntu | trusty/esm | * |
| Libiptables-parse-perl | Ubuntu | upstream | * |
| Libiptables-parse-perl | Ubuntu | vivid | * |
| Libiptables-parse-perl | Ubuntu | wily | * |
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://www.openwall.com/lists/oss-security/2015/11/24/10
- https://bugzilla.redhat.com/show_bug.cgi?id=1267962
- https://github.com/mtrmac/IPTables-Parse/commit/b400b976d81140f6971132e94eb7657b5b0a2b87
- https://metacpan.org/source/MRASH/IPTables-Parse-1.6/Changes
- http://www.openwall.com/lists/oss-security/2015/11/24/10
- https://bugzilla.redhat.com/show_bug.cgi?id=1267962
- https://github.com/mtrmac/IPTables-Parse/commit/b400b976d81140f6971132e94eb7657b5b0a2b87
- https://metacpan.org/source/MRASH/IPTables-Parse-1.6/Changes