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CVE-2018-18556

CRITICAL

9.9

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.

Details CVE

Score CVSS v3.19.9

SeveriteCRITICAL

Vecteur CVSSCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisLOW

Interaction utilisateurNONE

Publie12/17/2018

Derniere modification11/21/2024

Sourcenvd

Observations honeypot0

Produits affectes

vyos:vyos

References

http://packetstormsecurity.com/files/159234/VyOS-restricted-shell-Escape-Privilege-Escalation.html(cve@mitre.org)

https://blog.mirch.io/2018/11/05/cve-2018-18556-vyos-privilege-escalation-via-sudo-pppd-for-operator-users/(cve@mitre.org)

https://blog.vyos.io/the-operator-level-is-proved-insecure-and-will-be-removed-in-the-next-releases(cve@mitre.org)

http://packetstormsecurity.com/files/159234/VyOS-restricted-shell-Escape-Privilege-Escalation.html(af854a3a-2127-422b-91ae-364da2661108)

https://blog.mirch.io/2018/11/05/cve-2018-18556-vyos-privilege-escalation-via-sudo-pppd-for-operator-users/(af854a3a-2127-422b-91ae-364da2661108)

https://blog.vyos.io/the-operator-level-is-proved-insecure-and-will-be-removed-in-the-next-releases(af854a3a-2127-422b-91ae-364da2661108)

Correlations IOC

Aucune correlation enregistree

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