CVSS: 7.8EPSS: 0%CPEs: 221EXPL: 0CVE-2021-31359 – Junos OS and Junos OS Evolved: Local Privilege Escalation vulnerability
https://notcve.org/view.php?id=CVE-2021-31359
A local privilege escalation vulnerability in Juniper Networks Junos OS and Junos OS Evolved allows a local, low-privileged user to cause the Juniper DHCP daemon (jdhcpd) process to crash, resulting in a Denial of Service (DoS), or execute arbitrary commands as root. Continued processing of malicious input will repeatedly crash the system and sustain the Denial of Service (DoS) condition. Systems are only vulnerable if jdhcpd is running, which can be confirmed via the 'show system processes' command. For example: root@host# run show system processes extensive | match dhcp 26537 root -16 0 97568K 13692K RUN 0 0:01 3.71% jdhcpd This issue affects: Juniper Networks Junos OS: All versions, including the following supported releases: 15.1 versions prior to 15.1R7-S10; 17.4 versions prior to 17.4R3-S5; 18.3 versions prior to 18.3R3-S5; 18.4 versions prior to 18.4R3-S9; 19.1 versions prior to 19.1R3-S6; 19.2 versions prior to 19.2R1-S7, 19.2R3-S3; 19.3 versions prior to 19.3R2-S6, 19.3R3-S3; 19.4 versions prior to 19.4R3-S6; 20.1 versions prior to 20.1R2-S2, 20.1R3-S1; 20.2 versions prior to 20.2R3-S2; 20.3 versions prior to 20.3R3; 20.4 versions prior to 20.4R2-S1, 20.4R3; 21.1 versions prior to 21.1R1-S1, 21.1R2. Juniper Networks Junos OS Evolved: All versions prior to 20.4R2-S3-EVO; All versions of 21.1-EVO. • https://kb.juniper.net/JSA11222 • CWE-121: Stack-based Buffer Overflow CWE-269: Improper Privilege Management •
CVSS: 8.0EPSS: 0%CPEs: 132EXPL: 0CVE-2021-31355 – Junos OS: Stored Cross-Site Scripting (XSS) vulnerability in captive portal
https://notcve.org/view.php?id=CVE-2021-31355
A persistent cross-site scripting (XSS) vulnerability in the captive portal graphical user interface of Juniper Networks Junos OS may allow a remote authenticated user to inject web script or HTML and steal sensitive data and credentials from a web administration session, possibly tricking a follow-on administrative user to perform administrative actions on the device. This issue affects Juniper Networks Junos OS: All versions, including the following supported releases: 12.3X48 versions prior to 12.3X48-D105; 15.1X49 versions prior to 15.1X49-D220; 18.3 versions prior to 18.3R3-S5; 18.4 versions prior to 18.4R3-S9; 19.1 versions prior to 19.1R3-S7; 19.2 versions prior to 19.2R3-S3; 19.3 versions prior to 19.3R3-S4; 19.4 versions prior to 19.4R3-S6; 20.1 versions prior to 20.1R3; 20.2 versions prior to 20.2R1-S1, 20.2R2; 20.3 versions prior to 20.3R2; 20.4 versions prior to 20.4R2; 21.1 versions prior to 21.1R2. Una vulnerabilidad de tipo cross-site scripting (XSS) persistente en la interfaz gráfica de usuario del portal cautivo de Juniper Networks Junos OS puede permitir que un usuario remoto autenticado inyecte script web o HTML y robe datos y credenciales confidenciales de una sesión de administración web, posiblemente engañando a un usuario administrativo posterior para que lleve a cabo acciones administrativas en el dispositivo. Este problema afecta a Juniper Networks Junos OS: Todas las versiones, incluidas las siguientes versiones compatibles: versiones 12.3X48 anteriores a 12.3X48-D105; versiones 15.1X49 anteriores a 15.1X49-D220; versiones 18.3 anteriores a 18.3R3-S5; versiones 18.4 anteriores a 18.4R3-S9; versiones 19.1 anteriores a 19.1R3-S7; versiones 19.2 anteriores a 19.2R3-S3; versiones 19. 3 versiones anteriores a 19.3R3-S4; versiones 19.4 anteriores a 19.4R3-S6; versiones 20.1 anteriores a 20.1R3; versiones 20.2 anteriores a 20.2R1-S1, 20.2R2; versiones 20.3 anteriores a 20.3R2; versiones 20.4 anteriores a 20.4R2; versiones 21.1 anteriores a 21.1R2 • https://kb.juniper.net/JSA11220 • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •
CVSS: 7.5EPSS: 0%CPEs: 47EXPL: 0CVE-2021-31351 – Junos OS: MX Series: Receipt of specific packet on MS-MPC/MS-MIC causes line card reset
https://notcve.org/view.php?id=CVE-2021-31351
An Improper Check for Unusual or Exceptional Conditions in packet processing on the MS-MPC/MS-MIC utilized by Juniper Networks Junos OS allows a malicious attacker to send a specific packet, triggering the MS-MPC/MS-MIC to reset, causing a Denial of Service (DoS). Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue only affects specific versions of Juniper Networks Junos OS on MX Series: 17.3R3-S11; 17.4R2-S13; 17.4R3 prior to 17.4R3-S5; 18.1R3-S12; 18.2R2-S8, 18.2R3-S7, 18.2R3-S8; 18.3R3-S4; 18.4R3-S7; 19.1R3-S4, 19.1R3-S5; 19.2R1-S6; 19.3R3-S2; 19.4R2-S4, 19.4R2-S5; 19.4R3-S2; 20.1R2-S1; 20.2R2-S2, 20.2R2-S3, 20.2R3; 20.3R2, 20.3R2-S1; 20.4R1, 20.4R1-S1, 20.4R2; 21.1R1; This issue does not affect any version of Juniper Networks Junos OS prior to 15.1X49-D240; Una comprobación inapropiada de condiciones inusuales o excepcionales en el procesamiento de paquetes en el MS-MPC/MS-MIC usado por Juniper Networks Junos OS permite a un atacante malicioso enviar un paquete específico, haciendo que el MS-MPC/MS-MIC se reinicie, causando una Denegación de Servicio (DoS). Si se sigue recibiendo y procesando este paquete, se creará una condición de Denegación de Servicio (DoS) sostenida. Este problema sólo afecta a versiones específicas de Juniper Networks Junos OS en la serie MX: 17.3R3-S11; 17.4R2-S13; 17.4R3 anterior a 17.4R3-S5; 18.1R3-S12; 18.2R2-S8, 18.2R3-S7, 18.2R3-S8; 18.3R3-S4; 18.4R3-S7; 19.1R3-S4, 19.1R3-S5; 19.2R1-S6; 19.3R3-S2; 19.4R2-S4, 19.4R2-S5; 19. 4R3-S2; 20.1R2-S1; 20.2R2-S2, 20.2R2-S3, 20.2R3; 20.3R2, 20.3R2-S1; 20.4R1, 20.4R1-S1, 20.4R2; 21.1R1; Este problema no afecta a ninguna versión de Juniper Networks Junos OS anterior a la 15.1X49-D240; • https://kb.juniper.net/JSA11216 • CWE-754: Improper Check for Unusual or Exceptional Conditions •
CVSS: 7.8EPSS: 0%CPEs: 195EXPL: 0CVE-2021-0284 – Junos OS: Upon receipt of specific sequences of genuine packets destined to the device the kernel will crash and restart (vmcore)
https://notcve.org/view.php?id=CVE-2021-0284
A buffer overflow vulnerability in the TCP/IP stack of Juniper Networks Junos OS allows an attacker to send specific sequences of packets to the device thereby causing a Denial of Service (DoS). By repeatedly sending these sequences of packets to the device, an attacker can sustain the Denial of Service (DoS) condition. The device will abnormally shut down as a result of these sent packets. A potential indicator of compromise will be the following message in the log files: "eventd[13955]: SYSTEM_ABNORMAL_SHUTDOWN: System abnormally shut down" This issue is only triggered by traffic destined to the device. Transit traffic will not trigger this issue. • https://kb.juniper.net/JSA11200 • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') •
CVSS: 6.1EPSS: 0%CPEs: 204EXPL: 0CVE-2021-0295 – Junos OS: QFX10K Series: Denial of Service (DoS) upon receipt of DVMRP packets received on multi-homing ESI in VXLAN.
https://notcve.org/view.php?id=CVE-2021-0295
A vulnerability in the Distance Vector Multicast Routing Protocol (DVMRP) of Juniper Networks Junos OS on the QFX10K Series switches allows an attacker to trigger a packet forwarding loop, leading to a partial Denial of Service (DoS). The issue is caused by DVMRP packets looping on a multi-homed Ethernet Segment Identifier (ESI) when VXLAN is configured. DVMRP packets received on a multi-homed ESI are sent to the peer, and then incorrectly forwarded out the same ESI, violating the split horizon rule. This issue only affects QFX10K Series switches, including the QFX10002, QFX10008, and QFX10016. Other products and platforms are unaffected by this vulnerability. • https://kb.juniper.net/JSA11208 • CWE-697: Incorrect Comparison •