Phoenix Contact FL Comserver Uni up to 2.39 Modbus Exception denial of service

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability was found in Phoenix Contact FL Comserver Uni up to 2.39. It has been declared as problematic. Affected is an unknown function of the component Modbus Exception Handler. Such manipulation leads to denial of service. This vulnerability is listed as CVE-2021-21002. The attack may be performed from remote. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Phoenix Contact FL Comserver Uni up to 2.39 and classified as problematic. Affected by this issue is some unknown processing of the component Modbus Exception Handler. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability.

The weakness was presented 06/26/2021 as vde-2021-022. The advisory is available at cert.vde.com. This vulnerability is handled as CVE-2021-21002. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

Upgrading to version 2.40 eliminates this vulnerability.

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Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
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: 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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: FL Comserver Uni 2.40

Timelineinfo

12/17/2020 🔍
06/26/2021 +190 days 🔍
06/26/2021 +0 days 🔍
07/02/2021 +6 days 🔍

Sourcesinfo

Advisory: vde-2021-022
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-21002 (🔍)
GCVE (CVE): GCVE-0-2021-21002
GCVE (VulDB): GCVE-100-177638

Entryinfo

Created: 06/26/2021 06:41
Updated: 07/02/2021 23:31
Changes: 06/26/2021 06:41 (39), 07/02/2021 23:19 (6), 07/02/2021 23:31 (1)
Complete: 🔍
Cache ID: 216::103

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