VDB-263172 · CVE-2023-49676 · VDE-2024-024

CODESYS Development System prior 2.3.9.73 Project File use after free

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.
5.9	$0-$5k	0.00

Summaryinfo

A vulnerability classified as critical was found in CODESYS Development System. This affects an unknown function of the component Project File Handler. The manipulation results in use after free. This vulnerability is reported as CVE-2023-49676. The attack can be launched remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, was found in CODESYS Development System. Affected is an unknown function of the component Project File Handler. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on availability. CVE summarizes:

An unauthenticated local attacker may trick a user to open corrupted project files to crash the system due to use after free vulnerability.

The weakness was disclosed by Michael Heinzl as VDE-2024-024. The advisory is shared for download at cert.vde.com. This vulnerability is traded as CVE-2023-49676 since 11/29/2023. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available.

Upgrading to version 2.3.9.73 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

CODESYS

Name

Development System

License

commercial

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.0
VulDB Meta Temp Score: 5.9

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 5.5
CNA Vector (CERT VDE): 🔍

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: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Development System 2.3.9.73

Timelineinfo

11/29/2023 🔍
05/06/2024 +158 days 🔍
05/06/2024 +0 days 🔍
04/01/2025 +330 days 🔍

Sourcesinfo

Advisory: VDE-2024-024
Researcher: Michael Heinzl
Status: Confirmed

CVE: CVE-2023-49676 (🔍)
GCVE (CVE): GCVE-0-2023-49676
GCVE (VulDB): GCVE-100-263172

Entryinfo

Created: 05/06/2024 15:20
Updated: 04/01/2025 02:08
Changes: 05/06/2024 15:20 (64), 04/01/2025 02:08 (4)
Complete: 🔍
Cache ID: 216::103