CVE-2018-3969

An exploitable vulnerability exists in the verified boot protection of the CUJO Smart Firewall. It is possible to add arbitrary shell commands into the dhcpd.conf file, that persist across reboots and firmware updates, and thus allow for executing unverified commands. To trigger this vulnerability, a local attacker needs to be able to write into /config/dhcpd.conf.

CVSS v3.1

7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.0

8.2 HIGHCVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

CVSS v2.0

7.2 HIGHAV:L/AC:L/Au:N/C:C/I:C/A:C

EPSS

0.50% chance of exploitation in the next 30 days, 41th percentile

Published

2019-03-21

Updated

2024-08-05

Proof-of-concept exploits (1)

• https://talosintelligence.com/vulnerability_reports/TALOS-2018-0634

References

• CVE Record
• NVD entry

Related

• CVE-2018-3968
• CVE-2018-3970
• CVE-2018-3967
• CVE-2018-3971
• CVE-2018-3966
• CVE-2018-3973