CVE-2018-18556
Critical
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.
SeverityCritical
CVSS9.9
Exploit probability—
ProductVyos
PublishedDec 17, 2018
First seenDec 17, 2018
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| vyos vyos | 1.1.8 | — |
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