CODESYS EtherNetIP up to 4.0.x null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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3.4$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in CODESYS EtherNetIP up to 4.0.x. Affected by this vulnerability is an unknown functionality. Executing a manipulation can lead to null pointer dereference. This vulnerability is handled as CVE-2021-36765. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as problematic was found in CODESYS EtherNetIP up to 4.0.x. This vulnerability affects an unknown code block. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability.

The weakness was released 08/05/2021. The advisory is shared for download at customers.codesys.com. This vulnerability was named CVE-2021-36765. There are neither technical details nor an exploit publicly available.

Upgrading to version 4.1.0.0 eliminates this vulnerability.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: EtherNetIP 4.1.0.0

Timelineinfo

07/16/2021 🔍
08/05/2021 +20 days 🔍
08/05/2021 +0 days 🔍
08/08/2021 +3 days 🔍

Sourcesinfo

Advisory: customers.codesys.com
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-36765 (🔍)
GCVE (CVE): GCVE-0-2021-36765
GCVE (VulDB): GCVE-100-180136

Entryinfo

Created: 08/05/2021 08:26
Updated: 08/08/2021 15:52
Changes: 08/05/2021 08:26 (37), 08/08/2021 15:52 (3)
Complete: 🔍
Cache ID: 216::103

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