VDB-181149 · CVE-2021-21868 · TALOS-2021-1305

CODESYS Development System 3.5.16/3.5.17 Project.get_MissingTypes deserialization

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.
6.1	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in CODESYS Development System 3.5.16/3.5.17 and classified as critical. Affected by this issue is the function Project.get_MissingTypes. Performing a manipulation results in deserialization. This vulnerability is cataloged as CVE-2021-21868. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in CODESYS Development System 3.5.16/3.5.17. It has been classified as critical. This affects the function Project.get_MissingTypes. The manipulation with an unknown input leads to a deserialization vulnerability. CWE is classifying the issue as CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was shared 08/19/2021 as TALOS-2021-1305. The advisory is shared at talosintelligence.com. This vulnerability is uniquely identified as CVE-2021-21868. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available.

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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Productinfo

Vendor

CODESYS

Name

Development System

Version

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.1

VulDB Base Score: 6.3
VulDB Temp Score: 6.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Deserialization
CWE: CWE-502 / 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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/04/2021 🔍
08/19/2021 +226 days 🔍
08/19/2021 +0 days 🔍
08/21/2021 +2 days 🔍

Sourcesinfo

Advisory: TALOS-2021-1305
Status: Not defined

CVE: CVE-2021-21868 (🔍)
GCVE (CVE): GCVE-0-2021-21868
GCVE (VulDB): GCVE-100-181149

Entryinfo

Created: 08/19/2021 07:47
Updated: 08/21/2021 14:20
Changes: 08/19/2021 07:47 (37), 08/21/2021 14:20 (2)
Complete: 🔍
Cache ID: 216::103