Mitsubishi Electric MELSEC iQ-R resource consumption

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

A vulnerability was found in Mitsubishi Electric MELSEC iQ-R (affected version not known). It has been rated as problematic. Affected by this issue is an unknown code block. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-400. Impacted is availability. CVE summarizes:

Uncontrolled resource consumption vulnerability in MELSEC iQ-R Series modules (R00/01/02CPU firmware version '19' and earlier, R04/08/16/32/120 (EN) CPU firmware version '51' and earlier, R08/16/32/120SFCPU firmware version '22' and earlier, R08/16/32/120PCPU all versions, R08/16/32/120PSFCPU all versions, RJ71EN71 firmware version '47' and earlier, RJ71GF11-T2 firmware version '47' and earlier, RJ72GF15-T2 firmware version '07' and earlier, RJ71GP21-SX firmware version '47' and earlier, RJ71GP21S-SX firmware version '47' and earlier, RJ71C24 (-R2/R4) all versions, and RJ71GN11-T2 all versions) allows a remote unauthenticated attacker to cause an error in a CPU unit and cause a denial-of-service (DoS) condition in execution of the program and its communication, or to cause a denial-of-service (DoS) condition in communication via the module by a specially crafted SLMP packet

The weakness was disclosed 11/20/2020. The advisory is shared for download at jvn.jp. This vulnerability is handled as CVE-2020-5668 since 01/06/2020. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1499.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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CVSSv3infoedit

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

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

CVSSv2infoedit

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfoedit

Class: Denial of service
CWE: CWE-400
ATT&CK: T1499

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfoedit

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfoedit

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfoedit

01/06/2020 🔍
11/20/2020 +319 days 🔍
11/20/2020 +0 days 🔍
12/09/2020 +19 days 🔍

Sourcesinfoedit

Advisory: jvn.jp
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2020-5668 (🔍)

Entryinfoedit

Created: 11/20/2020 08:25 AM
Updated: 12/09/2020 04:46 PM
Changes: (2) source_cve_assigned source_cve_nvd_summary
Complete: 🔍

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