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CVSS: 7.5EPSS: 0%CPEs: 4EXPL: 0

A vulnerability has been identified in SIMATIC S7-200 SMART CPU family (All versions >= V2.2 < V2.5.1). Affected devices do not properly handle large numbers of new incomming connections and could crash under certain circumstances. An attacker may leverage this to cause a Denial-of-Service situation. Se ha identificado una vulnerabilidad en la familia de CPU SIMATIC S7-200 SMART (Todas las versiones posteriores e incluyendo a V2.2 anteriores a V2.5.1). Los dispositivos afectados no manejan apropiadamente un gran número de nuevas conexiones entrantes y podrían bloquearse bajo determinadas circunstancias. • https://cert-portal.siemens.com/productcert/pdf/ssa-589181.pdf • CWE-400: Uncontrolled Resource Consumption •

CVSS: 6.8EPSS: 0%CPEs: 32EXPL: 0

A vulnerability has been identified in SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (All versions), SIMATIC S7-1200 CPU family < V4.x (incl. SIPLUS variants) (All versions), SIMATIC S7-1200 CPU family V4.x (incl. SIPLUS variants) (All versions with Function State (FS) < 11), SIMATIC S7-200 SMART CPU CR20s (6ES7 288-1CR20-0AA1) (All versions <= V2.3.0 and Function State (FS) <= 3), SIMATIC S7-200 SMART CPU CR30s (6ES7 288-1CR30-0AA1) (All versions <= V2.3.0 and Function State (FS) <= 3), SIMATIC S7-200 SMART CPU CR40 (6ES7 288-1CR40-0AA0) (All versions <= V2.2.2 and Function State (FS) <= 8), SIMATIC S7-200 SMART CPU CR40s (6ES7 288-1CR40-0AA1) (All versions <= V2.3.0 and Function State (FS) <= 3), SIMATIC S7-200 SMART CPU CR60 (6ES7 288-1CR60-0AA0) (All versions <= V2.2.2 and Function State (FS) <= 10), SIMATIC S7-200 SMART CPU CR60s (6ES7 288-1CR60-0AA1) (All versions <= V2.3.0 and Function State (FS) <= 3), SIMATIC S7-200 SMART CPU SR20 (6ES7 288-1SR20-0AA0) (All versions <= V2.5.0 and Function State (FS) <= 11), SIMATIC S7-200 SMART CPU SR30 (6ES7 288-1SR30-0AA0) (All versions <= V2.5.0 and Function State (FS) <= 10), SIMATIC S7-200 SMART CPU SR40 (6ES7 288-1SR40-0AA0) (All versions <= V2.5.0 and Function State (FS) <= 10), SIMATIC S7-200 SMART CPU SR60 (6ES7 288-1SR60-0AA0) (All versions <= V2.5.0 and Function State (FS) <= 12), SIMATIC S7-200 SMART CPU ST20 (6ES7 288-1ST20-0AA0) (All versions <= V2.5.0 and Function State (FS) <= 9), SIMATIC S7-200 SMART CPU ST30 (6ES7 288-1ST30-0AA0) (All versions <= V2.5.0 and Function State (FS) <= 9), SIMATIC S7-200 SMART CPU ST40 (6ES7 288-1ST40-0AA0) (All versions <= V2.5.0 and Function State (FS) <= 8), SIMATIC S7-200 SMART CPU ST60 (6ES7 288-1ST60-0AA0) (All versions <= V2.5.0 and Function State (FS) <= 8), SIMATIC S7-200 SMART CPU family (All versions). There is an access mode used during manufacturing of the affected devices that allows additional diagnostic functionality. • https://cert-portal.siemens.com/productcert/pdf/ssa-686531.pdf • CWE-749: Exposed Dangerous Method or Function •

CVSS: 5.6EPSS: 0%CPEs: 665EXPL: 5

Systems with microprocessors utilizing speculative execution and speculative execution of memory reads before the addresses of all prior memory writes are known may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis, aka Speculative Store Bypass (SSB), Variant 4. Los sistemas con microprocesadores que emplean la ejecución especulativa y que realizan la ejecución especulativa de lecturas de memoria antes de que se conozcan las direcciones de todas las anteriores escrituras de memoria podrían permitir la divulgación no autorizada de información a un atacante con acceso de usuario local mediante un análisis de canal lateral. Esto también se conoce como Speculative Store Bypass (SSB), Variant 4. An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of Load & Store instructions (a commonly used performance optimization). It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory read from address to which a recent memory write has occurred may see an older value and subsequently cause an update into the microprocessor's data cache even for speculatively executed instructions that never actually commit (retire). • https://www.exploit-db.com/exploits/44695 https://github.com/mmxsrup/CVE-2018-3639 https://github.com/Shuiliusheng/CVE-2018-3639-specter-v4- https://github.com/malindarathnayake/Intel-CVE-2018-3639-Mitigation_RegistryUpdate http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00058.html http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00059.html http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00007.html http://support.lenovo.com/us/en/solutions/LEN-2213 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor CWE-203: Observable Discrepancy •

CVSS: 7.1EPSS: 0%CPEs: 181EXPL: 0

Specially crafted PROFINET DCP packets sent on a local Ethernet segment (Layer 2) to an affected product could cause a denial of service condition of that product. Human interaction is required to recover the system. PROFIBUS interfaces are not affected. This vulnerability affects only SIMATIC HMI Multi Panels and HMI Mobile Panels, and S7-300/S7-400 devices. Los paquetes PROFINET DCP especialmente diseñados que se envían en un segmento Ethernet local (capa 2) a un producto afectado podrían causar una condición de denegación de servicio de ese producto. • http://www.securityfocus.com/bid/98369 http://www.securitytracker.com/id/1038463 https://cert-portal.siemens.com/productcert/html/ssa-293562.html https://cert-portal.siemens.com/productcert/pdf/ssa-293562.pdf https://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-293562.pdf • CWE-400: Uncontrolled Resource Consumption •

CVSS: 7.1EPSS: 0%CPEs: 209EXPL: 0

Specially crafted PROFINET DCP broadcast packets could cause a denial of service condition of affected products on a local Ethernet segment (Layer 2). Human interaction is required to recover the systems. PROFIBUS interfaces are not affected. Los paquetes de difusión PROFINET DCP especialmente elaborados podrían causar una condición de denegación de servicio de los productos afectados en un segmento Ethernet local (capa 2). Se requiere la interacción humana para recuperar los sistemas. • http://www.securityfocus.com/bid/98369 http://www.securitytracker.com/id/1038463 https://cert-portal.siemens.com/productcert/html/ssa-284673.html https://cert-portal.siemens.com/productcert/html/ssa-293562.html https://cert-portal.siemens.com/productcert/html/ssa-546832.html https://cert-portal.siemens.com/productcert/pdf/ssa-284673.pdf https://cert-portal.siemens.com/productcert/pdf/ssa-293562.pdf https://cert-portal.siemens.com/productcert/pdf/ssa-546832.pdf https://ics-cert.us- • CWE-400: Uncontrolled Resource Consumption •