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CVSS: 7.5EPSS: 0%CPEs: 1EXPL: 1

In the CODESYS V2 web server prior to V1.1.9.22 crafted web server requests may cause a Null pointer dereference in the CODESYS web server and may result in a denial-of-service condition. En el servidor web de CODESYS V2 versiones anteriores a 1.1.9.22, unas peticiones del servidor web diseñadas pueden causar una desreferencia de puntero Null en el servidor web de CODESYS y puede resultar en una condición de denegación de servicio • https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16876&token=a3f1d937f95e7034879f4f2ea8e5a99b168256a7&download= https://www.tenable.com/security/research/tra-2021-47 • CWE-476: NULL Pointer Dereference •

CVSS: 7.5EPSS: 0%CPEs: 1EXPL: 1

In the CODESYS V2 web server prior to V1.1.9.22 crafted web server requests can trigger a parser error. Since the parser result is not checked under all conditions, a pointer dereference with an invalid address can occur. This leads to a denial of service situation. En el servidor web de CODESYS V2 versiones anteriores a 1.1.9.22, unas peticiones de servidor web diseñadas pueden desencadenar un error de análisis. Dado que el resultado del analizador no se comprueba en todas las condiciones, puede producirse una desreferencia de puntero con una dirección no válida. • https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16876&token=a3f1d937f95e7034879f4f2ea8e5a99b168256a7&download= https://www.tenable.com/security/research/tra-2021-47 • CWE-252: Unchecked Return Value •

CVSS: 9.1EPSS: 0%CPEs: 1EXPL: 1

Crafted web server requests can be utilised to read partial stack or heap memory or may trigger a denial-of- service condition due to a crash in the CODESYS V2 web server prior to V1.1.9.22. Unas peticiones del servidor web diseñadas pueden ser usadas para leer parcialmente la pila o la memoria de la pila o pueden desencadenar una situación de denegación de servicio debido a un bloqueo en el servidor web de CODESYS V2 versiones anteriores a 1.1.9.22 • https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16876&token=a3f1d937f95e7034879f4f2ea8e5a99b168256a7&download= https://www.tenable.com/security/research/tra-2021-47 • CWE-126: Buffer Over-read •

CVSS: 7.5EPSS: 0%CPEs: 1EXPL: 1

Crafted web server requests may cause a heap-based buffer overflow and could therefore trigger a denial-of- service condition due to a crash in the CODESYS V2 web server prior to V1.1.9.22. Unas peticiones del servidor web diseñadas pueden causar un desbordamiento del búfer en la región heap de la memoria y, por tanto, podrían desencadenar una situación de denegación de servicio debido a un bloqueo en el servidor web de CODESYS V2 versiones anteriores a 1.1.9.22 • https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16876&token=a3f1d937f95e7034879f4f2ea8e5a99b168256a7&download= https://www.tenable.com/security/research/tra-2021-47 • CWE-122: Heap-based Buffer Overflow CWE-787: Out-of-bounds Write •

CVSS: 7.5EPSS: 0%CPEs: 1EXPL: 1

An exploitable memory corruption vulnerability exists in the Name Service Client functionality of 3S-Smart Software Solutions CODESYS GatewayService. A specially crafted packet can cause a large memcpy, resulting in an access violation and termination of the process. An attacker can send a packet to a device running the GatewayService.exe to trigger this vulnerability. All variants of the CODESYS V3 products in all versions prior V3.5.16.10 containing the CmpRouter or CmpRouterEmbedded component are affected, regardless of the CPU type or operating system: CODESYS Control for BeagleBone, CODESYS Control for emPC-A/iMX6, CODESYS Control for IOT2000, CODESYS Control for Linux, CODESYS Control for PLCnext, CODESYS Control for PFC100, CODESYS Control for PFC200, CODESYS Control for Raspberry Pi, CODESYS Control RTE V3, CODESYS Control RTE V3 (for Beckhoff CX), CODESYS Control Win V3 (also part of the CODESYS Development System setup), CODESYS Control V3 Runtime System Toolkit, CODESYS V3 Embedded Target Visu Toolkit, CODESYS V3 Remote Target Visu Toolkit, CODESYS V3 Safety SIL2, CODESYS Edge Gateway V3, CODESYS Gateway V3, CODESYS HMI V3, CODESYS OPC Server V3, CODESYS PLCHandler SDK, CODESYS V3 Simulation Runtime (part of the CODESYS Development System). Se presenta una vulnerabilidad de corrupción de memoria explotable en la funcionalidad Name Service Client de 3S-Smart Software Solutions CODESYS GatewayService versión. • https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=13077&token=3bfc6d1d08415a6260b96093520071f5786e7fd4&download= https://talosintelligence.com/vulnerability_reports/TALOS-2019-0897 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-787: Out-of-bounds Write •