CVE-2018-20487

Public Exploit

Description

An issue was discovered in the firewall3 component in Inteno IOPSYS 1.0 through 3.16. The attacker must make a JSON-RPC method call to add a firewall rule as an "include" and point the "path" argument to a malicious script or binary. This gets executed as root when the firewall changes are committed.

Category

8.8
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.72% Top 30%
Third-Party Advisory neonsea.uk
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://neonsea.uk/blog/2018/12/26/firewall-includes.html third party advisory exploit
http://public.inteno.se/?p=feed-inteno-openwrt.git%3Ba=commit%3Bh=e6159ca928d7f0c143be213afc6bf810c0329fe2

Frequently Asked Questions

What is the severity of CVE-2018-20487?
CVE-2018-20487 has been scored as a high severity vulnerability.
How to fix CVE-2018-20487?
To fix CVE-2018-20487, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-20487 being actively exploited in the wild?
It is possible that CVE-2018-20487 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.