CVE-2018-18556
CVSS v3
9.9
CRITICAL
EPSS Score
68.9 %
exploit probability
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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.
Technical details
- Published
- 2018-12-17
Frequently asked questions
What is CVE-2018-18556?
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.
Is CVE-2018-18556 actively exploited?
Active exploitation of CVE-2018-18556 has not been confirmed. The EPSS score is 68.9%, indicating the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2018-18556?
CVE-2018-18556 has a CVSS v3 base score of 9.9 (CRITICAL severity).
Is CVE-2018-18556 affecting your environment?
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