CVE-2018-18556
Summary
| CVE | CVE-2018-18556 |
|---|---|
| State | PUBLIC |
| Assigner | [email protected] |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2018-12-17 19:29:00 UTC |
| Updated | 2023-01-20 15:28:00 UTC |
| Description | A privilege escalation issue was discovered in VyOS 1.1.8. The default configuration also allows operator users to execute the pppd binary with elevated (sudo) permissions. Certain input parameters are not properly validated. A malicious operator user can run the binary with elevated permissions and leverage its improper input validation condition to spawn an attacker-controlled shell with root privileges. |
Risk And Classification
Problem Types: NVD-CWE-noinfo
NVD Known Affected Configurations (CPE 2.3)
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| VyOS restricted-shell Escape / Privilege Escalation ≈ Packet Storm | MISC | packetstormsecurity.com | |
| CVE-2018-18556 – VyOS Privilege escalation via sudo pppd for operator users – Rich Mirch | MISC | blog.mirch.io | Exploit, Third Party Advisory |
| The "operator" level is proved insecure and will be removed in the next releases | CONFIRM | blog.vyos.io | Exploit, Vendor Advisory |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.