Rockwell Automation CompactLogix 5370/ControlLogix 5570 up to 33 CIP Packet denial of service

CVSS Meta Temp Score
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CTI Interest Score
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6.6$0-$5k0.00

Summaryinfo

A vulnerability was found in Rockwell Automation CompactLogix 5370 and ControlLogix 5570 up to 33. It has been rated as problematic. The affected element is an unknown function of the component CIP Packet Handler. Performing a manipulation results in denial of service. This vulnerability was named CVE-2020-6998. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in Rockwell Automation CompactLogix 5370 and ControlLogix 5570 up to 33 (Automation Software). It has been classified as problematic. This affects an unknown function of the component CIP Packet Handler. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. The summary by CVE is:

The connection establishment algorithm found in Rockwell Automation CompactLogix 5370 and ControlLogix 5570 versions 33 and prior does not sufficiently manage its control flow during execution, creating an infinite loop. This may allow an attacker to send specially crafted CIP packet requests to a controller, which may cause denial-of-service conditions in communications with other products.

The weakness was presented 07/28/2022 as icsa-21-061-02. The advisory is shared at cisa.gov. This vulnerability is uniquely identified as CVE-2020-6998 since 01/14/2020. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

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

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.6

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

NVD Base Score: 8.6
NVD Vector: 🔍

CNA Base Score: 5.8
CNA Vector (ICS-CERT): 🔍

CVSSv2info

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

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/14/2020 🔍
07/28/2022 +925 days 🔍
07/28/2022 +0 days 🔍
04/17/2025 +994 days 🔍

Sourcesinfo

Advisory: icsa-21-061-02
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2020-6998 (🔍)
GCVE (CVE): GCVE-0-2020-6998
GCVE (VulDB): GCVE-100-205233

Entryinfo

Created: 07/28/2022 09:37
Updated: 04/17/2025 19:22
Changes: 07/28/2022 09:37 (51), 08/28/2022 09:28 (11), 04/17/2025 19:22 (15)
Complete: 🔍
Cache ID: 216::103

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