High severity · published Apr 11, 2019
CVE-2018-20487
An issue was discovered in the firewall3 component in Inteno IOPSYS 1.0 through 3.16
8.8
CVSS
1.9%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.9% · higher than 79% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IO
Iopsys · Inteno
1.0 through 3.16 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-20487
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-20487
public.inteno.se
http://public.inteno.se/?p=feed-inteno-openwrt.git%3Ba=commit%3Bh=e6159ca928d7f0c143be213afc6bf810c0329fe2
Exploit
https://neonsea.uk/blog/2018/12/26/firewall-includes.html