CVE-2018-20487

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 v3.0 8.8 HIGH
CVSS v2.0 9.0 HIGH

8.8^/10

CVSS v3.0 : HIGH

Vector : AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

9.0^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:S/C:C/I:C/A:C

Exploitability : 8.0 / Impact : 10.0

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://neonsea.uk/blog/2018/12/26/firewall-includes.html	Exploit Third Party Advisory
http://public.inteno.se/?p=feed-inteno-openwrt.git;a=commit;h=e6159ca928d7f0c143be213afc6bf810c0329fe2	Vendor Advisory

Advertisement

Configurations

Configuration 1 (hide)

cpe:2.3:a:inteno:iopsys:*:*:*:*:*:*:*:*

Information

Published : 2019-04-11 14:29

Updated : 2019-04-12 07:14

NVD link : CVE-2018-20487

Mitre link : CVE-2018-20487

JSON object : View

CWE

CWE-20

Improper Input Validation

Advertisement

Products Affected

inteno

iopsys

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://neonsea.uk/blog/2018/12/26/firewall-includes.html", "name": "https://neonsea.uk/blog/2018/12/26/firewall-includes.html", "tags": ["Exploit", "Third Party Advisory"], "refsource": "MISC"}, {"url": "http://public.inteno.se/?p=feed-inteno-openwrt.git;a=commit;h=e6159ca928d7f0c143be213afc6bf810c0329fe2", "name": "http://public.inteno.se/?p=feed-inteno-openwrt.git;a=commit;h=e6159ca928d7f0c143be213afc6bf810c0329fe2", "tags": ["Vendor Advisory"], "refsource": "CONFIRM"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "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."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-20"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2018-20487", "ASSIGNER": "cve@mitre.org"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 9.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:C", "authentication": "SINGLE", "integrityImpact": "COMPLETE", "accessComplexity": "LOW", "availabilityImpact": "COMPLETE", "confidentialityImpact": "COMPLETE"}, "severity": "HIGH", "acInsufInfo": false, "impactScore": 10.0, "obtainAllPrivilege": false, "exploitabilityScore": 8.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.0", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}}, "publishedDate": "2019-04-11T21:29Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:inteno:iopsys:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndIncluding": "3.16", "versionStartIncluding": "1.0"}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2019-04-12T14:14Z"}