iscsi_discovery in open-iscsi in SUSE openSUSE 10.3 through 11.1 and SUSE Linux Enterprise (SLE) 10 SP2 and 11, and other operating systems, allows local users to overwrite arbitrary files via a symlink attack on an unspecified temporary file that has a predictable name.
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 |
|---|---|---|---|
| Suse_linux | Novell | 10-sp2 (including) | 10-sp2 (including) |
| Suse_linux | Novell | 11 (including) | 11 (including) |
| Opensuse | Opensuse | 10.3 (including) | 10.3 (including) |
| Opensuse | Opensuse | 11.1 (including) | 11.1 (including) |
| Open-iscsi | Ubuntu | hardy | * |
| Open-iscsi | Ubuntu | intrepid | * |
| Open-iscsi | Ubuntu | jaunty | * |
| Open-iscsi | Ubuntu | karmic | * |
| Open-iscsi | 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://lists.opensuse.org/opensuse-security-announce/2009-10/msg00001.html
- http://www.mandriva.com/security/advisories?name=MDVSA-2013:109
- https://wiki.mageia.org/en/Support/Advisories/MGASA-2012-0241
- http://lists.opensuse.org/opensuse-security-announce/2009-10/msg00001.html
- http://www.mandriva.com/security/advisories?name=MDVSA-2013:109
- https://wiki.mageia.org/en/Support/Advisories/MGASA-2012-0241