9.0crit
CVE-2018-3963
An exploitable command injection vulnerability exists in the DHCP daemon configuration of the CUJO Smart Firewall.
Published 7 y ago · modified 4 mo ago · JSON
CVSS
9.0
v3.0 · CNA
CISA KEV
No
not known exploited
EPSS
2.6%
percentile 85%
Public exploits
0
none known
Summary
An exploitable command injection vulnerability exists in the DHCP daemon configuration of the CUJO Smart Firewall. When adding a new static DHCP address, its corresponding hostname is inserted into the dhcpd.conf file without prior sanitization, allowing for arbitrary execution of system commands. To trigger this vulnerability, an attacker can send a DHCP request message and set up the corresponding static DHCP entry.
Exploit prediction (EPSS)
2.61% probability of exploitation in the next 30 days, higher than 85% of all scored CVEs.
CVSS scores
| Assigned by | Version | Score | Vector |
|---|---|---|---|
| CNA | 3.0 | 9.0 | CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
| NVD | 3.1 | 8.0 | CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| CNA | 3.0 | 9.0 | CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
| NVD | 2.0 | 7.7 | AV:A/AC:L/Au:S/C:C/I:C/A:C |
Affected products
- n/a CUJO
Classification
- Weakness
- CWE-77 Improper Neutralization of Special Elements used in a Command
References
- talosintelligence.com /vulnerability_reports/TALOS-2018-0627 · x_refsource_MISC, x_transferred
Sources
- CVE List: CVE-2018-3963
- NVD: CVE-2018-3963
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