Libmodbus
Monthly
Stack-based buffer overflow in libmodbus 3.1.10 lets an attacker overrun the fixed response buffer when the library builds a Modbus reply to a request whose declared length is unexpected. Any application embedding this widely-used Modbus TCP/RTU library - typically PLCs, gateways, SCADA/HMI components and IoT devices acting as Modbus servers - can be crashed or potentially made to execute code by an attacker able to reach the Modbus endpoint. There is no public exploit identified at time of analysis, and the EPSS probability is low (0.21%, 43rd percentile), but the flaw was reported by Nozomi Networks and a vendor fix is available.
An invalid pointer in the modbus_receive() function of libmodbus v3.1.6 allows attackers to cause a Denial of Service (DoS) via a crafted message sent to the unit-test-server. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
libmodbus v3.1.6 was discovered to contain a use-after-free via the ctx->backend pointer. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
libmodbus v3.1.6 was discovered to contain a heap overflow via the modbus_mapping_free() function. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
libmodbus v3.1.10 is vulnerable to Buffer Overflow via the modbus_write_bits function. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
A heap-based buffer overflow flaw was found in libmodbus in function modbus_reply() in src/modbus.c. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. Public exploit code available.
An issue was discovered in libmodbus before 3.0.7 and 3.1.x before 3.1.5. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Out-of-bounds Read vulnerability could allow attackers to read data from memory outside the intended buffer boundaries.
An issue was discovered in libmodbus before 3.0.7 and 3.1.x before 3.1.5. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Out-of-bounds Read vulnerability could allow attackers to read data from memory outside the intended buffer boundaries.
Stack-based buffer overflow in libmodbus 3.1.10 lets an attacker overrun the fixed response buffer when the library builds a Modbus reply to a request whose declared length is unexpected. Any application embedding this widely-used Modbus TCP/RTU library - typically PLCs, gateways, SCADA/HMI components and IoT devices acting as Modbus servers - can be crashed or potentially made to execute code by an attacker able to reach the Modbus endpoint. There is no public exploit identified at time of analysis, and the EPSS probability is low (0.21%, 43rd percentile), but the flaw was reported by Nozomi Networks and a vendor fix is available.
An invalid pointer in the modbus_receive() function of libmodbus v3.1.6 allows attackers to cause a Denial of Service (DoS) via a crafted message sent to the unit-test-server. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
libmodbus v3.1.6 was discovered to contain a use-after-free via the ctx->backend pointer. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
libmodbus v3.1.6 was discovered to contain a heap overflow via the modbus_mapping_free() function. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
libmodbus v3.1.10 is vulnerable to Buffer Overflow via the modbus_write_bits function. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
A heap-based buffer overflow flaw was found in libmodbus in function modbus_reply() in src/modbus.c. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. Public exploit code available.
An issue was discovered in libmodbus before 3.0.7 and 3.1.x before 3.1.5. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Out-of-bounds Read vulnerability could allow attackers to read data from memory outside the intended buffer boundaries.
An issue was discovered in libmodbus before 3.0.7 and 3.1.x before 3.1.5. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Out-of-bounds Read vulnerability could allow attackers to read data from memory outside the intended buffer boundaries.