VDB-159274 · CVE-2020-12739 · GCVE-0-2020-12739

FANUC 0i-MD/0i Mate-MD Ethernet Communication Malformed Packet input validation

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.2	$0-$5k	0.00

Summaryinfo

A vulnerability labeled as problematic has been found in FANUC 0i-MD and 0i Mate-MD. Impacted is an unknown function of the component Ethernet Communication Module. Executing a manipulation as part of Malformed Packet can lead to input validation. The identification of this vulnerability is CVE-2020-12739. The attack may be launched remotely. There is no exploit available. The application of restrictive firewalling is recommended.

Detailsinfo

A vulnerability classified as problematic was found in FANUC 0i-MD and 0i Mate-MD (the affected version unknown). This vulnerability affects an unknown part of the component Ethernet Communication Module. The manipulation as part of a Malformed Packet leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect availability. CVE summarizes:

A vulnerability in the Fanuc i Series CNC (0i-MD and 0i Mate-MD) could allow an unauthenticated, remote attacker to cause an affected CNC to become inaccessible to other devices. The vulnerability is due to improper design or implementation of the Ethernet communication modules of the CNC. An attacker could exploit this vulnerability by sending a series of malformed packets to port 8193/tcp, resulting in a denial of service (DoS) condition, where the affected device would require a manual power cycle of the CNC to recover.

The weakness was shared 08/03/2020. This vulnerability was named CVE-2020-12739 since 05/08/2020. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available.

Proper firewalling of tcp/8193 is able to address this issue.

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Productinfo

Vendor

FANUC

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.3
VulDB Temp Score: 5.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Firewall
Status: 🔍

0-Day Time: 🔍

Firewalling: 🔍

Timelineinfo

05/08/2020 🔍
08/03/2020 +87 days 🔍
08/04/2020 +1 days 🔍
08/04/2020 +0 days 🔍

Sourcesinfo

Status: Not defined

CVE: CVE-2020-12739 (🔍)
GCVE (CVE): GCVE-0-2020-12739
GCVE (VulDB): GCVE-100-159274

Entryinfo

Created: 08/04/2020 08:12
Updated: 08/04/2020 08:17
Changes: 08/04/2020 08:12 (37), 08/04/2020 08:17 (17)
Complete: 🔍
Cache ID: 216::103