libmodbus 3.1.10 src/modbus.c read_io_status heap-based overflow

Summaryinfo

A vulnerability was found in libmodbus 3.1.10. It has been declared as critical. Affected is the function read_io_status of the file src/modbus.c. The manipulation results in heap-based overflow. This vulnerability is known as CVE-2023-26793. No exploit is available.

Detailsinfo

A vulnerability classified as critical has been found in libmodbus 3.1.10. Affected is the function read_io_status of the file src/modbus.c. The manipulation with an unknown input leads to a heap-based overflow vulnerability. CWE is classifying the issue as CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

libmodbus v3.1.10 has a heap-based buffer overflow vulnerability in read_io_status function in src/modbus.c.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2023-26793 since 02/27/2023. The exploitability is told to be easy. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 05/01/2024).

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

Name

• libmodbus

Version

• 3.1.10

CPE 2.3info

• 🔍

CPE 2.2info

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