CVE-2021-0204 – Junos OS: dexp Local Privilege Escalation vulnerabilities in SUID binaries
https://notcve.org/view.php?id=CVE-2021-0204
A sensitive information disclosure vulnerability in delta-export configuration utility (dexp) of Juniper Networks Junos OS may allow a locally authenticated shell user the ability to create and read database files generated by the dexp utility, including password hashes of local users. Since dexp 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 dexp with root privileges and access sensitive information in the dexp database. This issue affects Juniper Networks Junos OS: 15.1 versions prior to 15.1R7-S8; 15.1X49 versions prior to 15.1X49-D230; 17.3 versions prior to 17.3R3-S9; 17.4 versions prior to 17.4R2-S12, 17.4R3-S3; 18.1 versions prior to 18.1R3-S11; 18.2 versions prior to 18.2R3-S6; 18.2X75 versions prior to 18.2X75-D34; 18.3 versions prior to 18.3R3-S4; 18.4 versions prior to 18.4R2-S7, 18.4R3-S6; 19.1 versions prior to 19.1R1-S6, 19.1R2-S2, 19.1R3-S3; 19.2 versions prior to 19.2R1-S5, 19.2R3-S1; 19.3 versions prior to 19.3R2-S5, 19.3R3-S1; 19.4 versions prior to 19.4R1-S3, 19.4R2-S2, 19.4R3-S1; 20.1 versions prior to 20.1R1-S4, 20.1R2; 20.2 versions prior to 20.2R1-S2, 20.2R2. Una vulnerabilidad de divulgación de información confidencial en el recurso de configuración de delta-export (dexp) de Juniper Networks Junos OS puede permitir a un usuario del shell autenticado local la capacidad de crear y leer archivos de base de la datos generados por el recurso dexp, incluidos los hash de contraseña de usuarios locales. Dado que dexp es enviado con permisos setuid habilitados y es propiedad del usuario root, esta vulnerabilidad puede permitir a un usuario privilegiado local la capacidad de ejecutar dexp con privilegios root y acceder a información confidencial en la base de datos de dexp. • https://kb.juniper.net/JSA11114 • CWE-250: Execution with Unnecessary Privileges CWE-269: Improper Privilege Management •
CVE-2021-0202 – Junos OS: MX Series, EX9200 Series: Trio-based MPC memory leak when Integrated Routing and Bridging (IRB) interface is mapped to a VPLS instance or a Bridge-Domain
https://notcve.org/view.php?id=CVE-2021-0202
On Juniper Networks MX Series and EX9200 Series platforms with Trio-based MPC (Modular Port Concentrator) where Integrated Routing and Bridging (IRB) interface is configured and it is mapped to a VPLS instance or a Bridge-Domain, certain network events at Customer Edge (CE) device may cause memory leak in the MPC which can cause an out of memory and MPC restarts. 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). Please refer to https://kb.juniper.net/KB25385 for the list of Trio-based PFEs. • https://kb.juniper.net/JSA11092 • CWE-400: Uncontrolled Resource Consumption CWE-401: Missing Release of Memory after Effective Lifetime •
CVE-2020-1664 – Junos OS: Buffer overflow vulnerability in device control daemon
https://notcve.org/view.php?id=CVE-2020-1664
A stack buffer overflow vulnerability in the device control daemon (DCD) on Juniper Networks Junos OS allows a low privilege local user to create a Denial of Service (DoS) against the daemon or execute arbitrary code in the system with root privilege. This issue affects Juniper Networks Junos OS: 17.3 versions prior to 17.3R3-S9; 17.4 versions prior to 17.4R2-S12, 17.4R3-S3; 18.1 versions prior to 18.1R3-S11; 18.2 versions prior to 18.2R3-S6; 18.2X75 versions prior to 18.2X75-D53, 18.2X75-D65; 18.3 versions prior to 18.3R2-S4, 18.3R3-S4; 18.4 versions prior to 18.4R2-S5, 18.4R3-S5; 19.1 versions prior to 19.1R3-S3; 19.2 versions prior to 19.2R1-S5, 19.2R3; 19.3 versions prior to 19.3R2-S4, 19.3R3; 19.4 versions prior to 19.4R1-S3, 19.4R2-S2, 19.4R3; 20.1 versions prior to 20.1R1-S4, 20.1R2; 20.2 versions prior to 20.2R1-S1, 20.2R2. Versions of Junos OS prior to 17.3 are unaffected by this vulnerability. Una vulnerabilidad de desbordamiento del búfer de la pila en device control daemon (DCD) en Juniper Networks Junos OS, permite a un usuario local con pocos privilegios crear una Denegación de Servicio (DoS) contra el demonio o ejecutar código arbitrario en el sistema con privilegios root. Este problema afecta a Juniper Networks Junos OS: versiones 17.3 anteriores a 17.3R3-S9; versiones 17.4 anteriores a 17.4R2-S12, 17.4R3-S3; versiones 18.1 anteriores a 18.1R3-S11; versiones 18.2 anteriores a 18.2R3-S6; versiones 18.2X75 anteriores a 18.2X75-D53, 18.2X75-D65; versiones 18.3 anteriores a 18.3R2-S4, 18.3R3-S4; versiones 18.4 anteriores a 18.4R2-S5, 18.4R3-S5; versiones 19.1 anteriores a 19.1R3-S3; versiones 19.2 anteriores a 19.2R1-S5, 19.2R3; versiones 19.3 anteriores a 19.3R2-S4, 19.3R3; versiones 19.4 anteriores a 19.4R1-S3, 19.4R2-S2, 19.4R3; versiones 20.1 anteriores a 20.1R1-S4, 20.1R2; versiones 20.2 anteriores a 20.2R1-S1, 20.2R2 • https://kb.juniper.net/JSA11061 • CWE-121: Stack-based Buffer Overflow CWE-787: Out-of-bounds Write •