The default configuration of libsdp.conf in libsdp 1.1.104 and earlier creates log files in /tmp, which allows local users to overwrite arbitrary files via a (1) symlink or (2) hard link attack on the libsdp.log.##### temporary file.
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 |
|---|---|---|---|
| Libsdp | Openfabrics | * | 1.1.104 (including) |
| Libsdp | Openfabrics | 1.1.99 (including) | 1.1.99 (including) |
| Libsdp | Openfabrics | 1.1.100 (including) | 1.1.100 (including) |
| Libsdp | Openfabrics | 1.1.101 (including) | 1.1.101 (including) |
| Libsdp | Openfabrics | 1.1.102 (including) | 1.1.102 (including) |
| Libsdp | Openfabrics | 1.1.103 (including) | 1.1.103 (including) |
| Libsdp | Ubuntu | lucid | * |
| Libsdp | Ubuntu | maverick | * |
| Libsdp | Ubuntu | natty | * |
| Libsdp | Ubuntu | oneiric | * |
| Libsdp | Ubuntu | quantal | * |
| Libsdp | Ubuntu | raring | * |
| Libsdp | Ubuntu | saucy | * |
| Libsdp | 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://www.openfabrics.org/downloads/libsdp/libsdp-1.1.105-0.4.g1b9b996.tar.gz
- http://www.openwall.com/lists/oss-security/2010/11/16/2
- http://www.openwall.com/lists/oss-security/2010/11/16/7
- https://bugzilla.redhat.com/show_bug.cgi?id=647941
- http://www.openfabrics.org/downloads/libsdp/libsdp-1.1.105-0.4.g1b9b996.tar.gz
- http://www.openwall.com/lists/oss-security/2010/11/16/2
- http://www.openwall.com/lists/oss-security/2010/11/16/7
- https://bugzilla.redhat.com/show_bug.cgi?id=647941