CVSS: 7.5EPSS: 0%CPEs: 157EXPL: 0CVE-2021-0260 – Junos OS: SNMP fails to properly perform authorization checks on incoming received SNMP requests.
https://notcve.org/view.php?id=CVE-2021-0260
An improper authorization vulnerability in the Simple Network Management Protocol daemon (snmpd) service of Juniper Networks Junos OS leads an unauthenticated attacker being able to perform SNMP read actions, an Exposure of System Data to an Unauthorized Control Sphere, or write actions to OIDs that support write operations, against the device without authentication. This issue affects: Juniper Networks Junos OS: 17.2 version 17.2R1 and later versions; 17.3 versions prior to 17.3R3-S9; 17.4 versions prior to 17.4R2-S12, 17.4R3-S5; 18.1 versions prior to 18.1R3-S13; 18.2 versions prior to 18.2R3-S8; 18.3 versions prior to 18.3R3-S5; 18.4 versions prior to 18.4R1-S8, 18.4R2-S5, 18.4R3; 19.1 versions prior to 19.1R2; 19.2 versions prior to 19.2R1-S6, 19.2R2; 19.3 versions prior to 19.3R2. This issue does not affect Juniper Networks Junos OS versions prior to 17.2R1. Una vulnerabilidad de autorización inapropiada en el servicio de demonio Simple Network Management Protocol (snmpd) de Juniper Networks Junos OS, hace a un atacante no autenticado pueda realizar acciones de lectura SNMP, una Exposición de Datos del Sistema a una Esfera de Control No Autorizada o acciones de escritura en OID compatibles operaciones de escritura, contra el dispositivo sin autenticación. Este problema afecta a: Juniper Networks Junos OS: 17.2 versión 17.2R1 y versiones posteriores; 17.3 versiones anteriores a 17.3R3-S9; 17.4 versiones anteriores a 17.4R2-S12, 17.4R3-S5; versiones 18.1 anteriores a 18.1R3-S13; 18.2 versiones anteriores a 18.2R3-S8; versiones 18.3 anteriores a 18.3R3-S5; 18.4 versiones anteriores a 18.4R1-S8, 18.4R2-S5, 18.4R3; 19.1 versiones anteriores a 19.1R2; 19.2 versiones anteriores a 19.2R1-S6, 19.2R2; 19.3 versiones anteriores a 19.3R2 • https://kb.juniper.net/JSA11151 • CWE-285: Improper Authorization CWE-497: Exposure of Sensitive System Information to an Unauthorized Control Sphere •
CVSS: 7.4EPSS: 0%CPEs: 204EXPL: 0CVE-2021-0259 – Junos OS and Junos OS Evolved: QFX5K Series: Underlay network traffic might not be processed upon receipt of high rate of specific genuine overlay packets in VXLAN scenario
https://notcve.org/view.php?id=CVE-2021-0259
Due to a vulnerability in DDoS protection in Juniper Networks Junos OS and Junos OS Evolved on QFX5K Series switches in a VXLAN configuration, instability might be experienced in the underlay network as a consequence of exceeding the default ddos-protection aggregate threshold. If an attacker on a client device on the overlay network sends a high volume of specific, legitimate traffic in the overlay network, due to an improperly detected DDoS violation, the leaf might not process certain L2 traffic, sent by spines in the underlay network. Continued receipt and processing of the high volume traffic will sustain the Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS on QFX5K Series: 17.3 versions prior to 17.3R3-S11; 17.4 versions prior to 17.4R3-S5; 18.1 versions prior to 18.1R3-S13; 18.2 versions prior to 18.2R2-S8, 18.2R3-S8; 18.3 versions prior to 18.3R3-S5; 18.4 versions prior to 18.4R1-S8, 18.4R2-S6, 18.4R3-S6; 19.1 versions prior to 19.1R3-S4; 19.2 versions prior to 19.2R1-S6, 19.2R3-S2; 19.3 versions prior to 19.3R3-S2; 19.4 versions prior to 19.4R2-S4, 19.4R3-S1; 20.1 versions prior to 20.1R2; 20.2 versions prior to 20.2R2; 20.3 versions prior to 20.3R1-S2, 20.3R2. Juniper Networks Junos OS Evolved on QFX5220: All versions prior to 20.3R2-EVO. • https://kb.juniper.net/JSA11150 • CWE-755: Improper Handling of Exceptional Conditions •
CVSS: 7.1EPSS: 0%CPEs: 156EXPL: 0CVE-2021-0258 – Junos OS: Kernel panic upon receipt of specific TCPv6 packet on management interface
https://notcve.org/view.php?id=CVE-2021-0258
A vulnerability in the forwarding of transit TCPv6 packets received on the Ethernet management interface of Juniper Networks Junos OS allows an attacker to trigger a kernel panic, leading to a Denial of Service (DoS). Continued receipt and processing of these transit packets will create a sustained Denial of Service (DoS) condition. This issue only occurs when TCPv6 packets are routed through the management interface. Other transit traffic, and traffic destined to the management interface, are unaffected by this vulnerability. This issue was introduced as part of a TCP Parallelization feature added in Junos OS 17.2, and affects systems with concurrent network stack enabled. • https://kb.juniper.net/JSA11149 • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •
CVSS: 6.5EPSS: 0%CPEs: 149EXPL: 0CVE-2021-0257 – Junos OS: MX Series, EX9200 Series: Trio-based MPCs memory leak in VPLS with integrated routing and bridging (IRB) interface
https://notcve.org/view.php?id=CVE-2021-0257
On Juniper Networks MX Series and EX9200 Series platforms with Trio-based MPCs (Modular Port Concentrators) where Integrated Routing and Bridging (IRB) interfaces are configured and mapped to a VPLS instance or a Bridge-Domain, certain Layer 2 network events at Customer Edge (CE) devices may cause memory leaks in the MPC of Provider Edge (PE) devices which can cause an out of memory condition and MPC restart. When this issue occurs, there will be temporary traffic interruption until the MPC is restored. An administrator can use the following CLI command to monitor the status of memory usage level of the MPC: user@device> show system resource-monitor fpc FPC Resource Usage Summary Free Heap Mem Watermark : 20 % Free NH Mem Watermark : 20 % Free Filter Mem Watermark : 20 % * - Watermark reached Slot # % Heap Free RTT Average RTT 1 87 PFE # % ENCAP mem Free % NH mem Free % FW mem Free 0 NA 88 99 1 NA 89 99 When the issue is occurring, the value of “% NH mem Free” will go down until the MPC restarts. This issue affects MX Series and EX9200 Series with Trio-based PFEs (Packet Forwarding Engines), including MX-MPC1-3D, MX-MPC1E-3D, MX-MPC2-3D, MX-MPC2E-3D, MPC-3D-16XGE, and CHAS-MXxx Series MPCs. No other products or platforms are affected by this issue. • https://kb.juniper.net/JSA11148 • CWE-400: Uncontrolled Resource Consumption CWE-401: Missing Release of Memory after Effective Lifetime •
CVSS: 5.5EPSS: 0%CPEs: 183EXPL: 0CVE-2021-0256 – Junos OS: mosquitto Local Privilege Escalation vulnerability in SUID binaries
https://notcve.org/view.php?id=CVE-2021-0256
A sensitive information disclosure vulnerability in the mosquitto message broker of Juniper Networks Junos OS may allow a locally authenticated user with shell access the ability to read portions of sensitive files, such as the master.passwd file. Since mosquitto is shipped with setuid permissions enabled and is owned by the root user, this vulnerability may allow a local privileged user the ability to run mosquitto with root privileges and access sensitive information stored on the local filesystem. This issue affects Juniper Networks Junos OS: 17.3 versions prior to 17.3R3-S12, 17.4 versions prior to 17.4R3-S4; 18.1 versions prior to 18.1R3-S12; 18.3 versions prior to 18.3R3-S4; 19.1 versions prior to 19.1R3-S4; 19.3 versions prior to 19.3R3-S1, 19.3R3-S2; 19.4 versions prior to 19.4R2-S3; 20.1 versions prior to 20.1R2; 20.2 versions prior to 20.2R1-S3, 20.2R2, 20.2R3. Una vulnerabilidad de divulgación de información confidencial en el broker de mensajes mosquitto de Juniper Networks Junos OS, puede permitir a un usuario autenticado localmente con acceso de shell la habilidad de leer partes de archivos confidenciales, tal y como el archivo master.passwd. Desde que mosquitto es enviado con permisos setuid habilitados y es propiedad del usuario root, esta vulnerabilidad puede permitir a un usuario privilegiado local la habilidad ejecutar mosquitto con privilegios de root y acceder a información confidencial almacenada en el sistema de archivos local. • https://kb.juniper.net/JSA11175 • CWE-250: Execution with Unnecessary Privileges CWE-269: Improper Privilege Management •