CVSS: 7.5EPSS: 0%CPEs: 26EXPL: 0CVE-2021-0270 – Junos OS: PTX Series, QFX10K Series: A PTX/QFX FPC may restart unexpectedly with the "inline-Jflow" feature enabled on a large-scale deployment
https://notcve.org/view.php?id=CVE-2021-0270
On PTX Series and QFX10k Series devices with the "inline-jflow" feature enabled, a use after free weakness in the Packet Forwarding Engine (PFE) microkernel architecture of Juniper Networks Junos OS may allow an attacker to cause a Denial of Service (DoS) condition whereby one or more Flexible PIC Concentrators (FPCs) may restart. As this is a race condition situation this issue become more likely to be hit when network instability occurs, such as but not limited to BGP/IGP reconvergences, and/or further likely to occur when more active "traffic flows" are occurring through the device. When this issue occurs, it will cause one or more FPCs to restart unexpectedly. During FPC restarts core files will be generated. While the core file is generated traffic will be disrupted. • https://kb.juniper.net/JSA11161 https://www.juniper.net/documentation/en_US/junos/topics/task/configuration/inline-flow-monitoring-ptx.html • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') CWE-416: Use After Free •
CVSS: 8.8EPSS: 0%CPEs: 148EXPL: 0CVE-2021-0269 – Junos OS: J-Web can be compromised through reflected client-side HTTP parameter pollution attacks.
https://notcve.org/view.php?id=CVE-2021-0269
The improper handling of client-side parameters in J-Web of Juniper Networks Junos OS allows an attacker to perform a number of different malicious actions against a target device when a user is authenticated to J-Web. An attacker may be able to supersede existing parameters, including hardcoded parameters within the HTTP/S session, access and exploit variables, bypass web application firewall rules or input validation mechanisms, and otherwise alter and modify J-Web's normal behavior. An attacker may be able to transition victims to malicious web services, or exfiltrate sensitive information from otherwise secure web forms. This issue affects: Juniper Networks Junos OS: All versions prior to 17.4R3-S3; 18.1 versions prior to 18.1R3-S12; 18.2 versions prior to 18.2R3-S6; 18.3 versions prior to 18.3R3-S4; 18.4 versions prior to 18.4R3-S6; 19.1 versions prior to 19.1R3-S4; 19.2 versions prior to 19.2R3-S1; 19.3 versions prior to 19.3R3-S1; 19.4 versions prior to 19.4R2-S2, 19.4R3; 20.1 versions prior to 20.1R2; 20.2 versions prior to 20.2R2. El manejo inapropiado de los parámetros client-side en J-Web de Juniper Networks Junos OS, permite a un atacante llevar a cabo una serie de diferentes acciones maliciosas contra un dispositivo objetivo cuando un usuario está autenticado en J-Web. • https://kb.juniper.net/JSA11160 • CWE-233: Improper Handling of Parameters •
CVSS: 9.3EPSS: 0%CPEs: 100EXPL: 0CVE-2021-0268 – Junos OS: J-Web has an Improper Neutralization of CRLF Sequences in its HTTP Headers which allows an attacker to carry out multiple types of attacks.
https://notcve.org/view.php?id=CVE-2021-0268
An Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting') weakness in J-web of Juniper Networks Junos OS leads to buffer overflows, segment faults, or other impacts, which allows an attacker to modify the integrity of the device and exfiltration information from the device without authentication. The weakness can be exploited to facilitate cross-site scripting (XSS), cookie manipulation (modifying session cookies, stealing cookies) and more. This weakness can also be exploited by directing a user to a seemingly legitimate link from the affected site. The attacker requires no special access or permissions to the device to carry out such attacks. This issue affects: Juniper Networks Junos OS: 18.1 versions prior to 18.1R3-S11; 18.2 versions prior to 18.2R3-S5; 18.3 versions prior to 18.3R2-S4, 18.3R3-S3; 18.4 versions prior to 18.4R2-S5, 18.4R3-S3; 19.1 versions prior to 19.1R2-S2, 19.1R3-S2; 19.2 versions prior to 19.2R1-S5, 19.2R2; 19.3 versions prior to 19.3R3; 19.4 versions prior to 19.4R1-S3, 19.4R2, 19.4R3; 20.1 versions prior to 20.1R1-S2, 20.1R2. • https://kb.juniper.net/JSA11159 • CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting') CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') •
CVSS: 5.9EPSS: 0%CPEs: 124EXPL: 0CVE-2021-0263 – Junos OS: PTX Series: Denial of Service in packet processing due to heavy route churn when J-Flow sampling is enabled
https://notcve.org/view.php?id=CVE-2021-0263
A Data Processing vulnerability in the Multi-Service process (multi-svcs) on the FPC of Juniper Networks Junos OS on the PTX Series routers may lead to the process becoming unresponsive, ultimately affecting traffic forwarding, allowing an attacker to cause a Denial of Service (DoS) condition . The Multi-Service Process running on the FPC is responsible for handling sampling-related operations when a J-Flow configuration is activated. This can occur during periods of heavy route churn, causing the Multi-Service Process to stop processing updates, without consuming any further updates from kernel. This back pressure towards the kernel affects further dynamic updates from other processes in the system, including RPD, causing a KRT-STUCK condition and traffic forwarding issues. An administrator can monitor the following command to check if there is the KRT queue is stuck: user@device > show krt state ... • https://kb.juniper.net/JSA11154 https://www.juniper.net/documentation/en_US/junos/topics/example/flowmonitoring-active-sampling-instance-example.html • CWE-19: Data Processing Errors •
CVSS: 7.5EPSS: 0%CPEs: 324EXPL: 0CVE-2021-0261 – Junos OS: Denial of Service vulnerability in J-Web and web based (HTTP/HTTPS) services caused by a high number of specific requests
https://notcve.org/view.php?id=CVE-2021-0261
A vulnerability in the HTTP/HTTPS service used by J-Web, Web Authentication, Dynamic-VPN (DVPN), Firewall Authentication Pass-Through with Web-Redirect, and Captive Portal allows an unauthenticated attacker to cause an extended Denial of Service (DoS) for these services by sending a high number of specific requests. This issue affects: Juniper Networks Junos OS 12.3 versions prior to 12.3R12-S17 on EX Series; 12.3X48 versions prior to 12.3X48-D105 on SRX Series; 15.1 versions prior to 15.1R7-S8; 15.1X49 versions prior to 15.1X49-D230 on SRX Series; 16.1 versions prior to 16.1R7-S8; 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; 18.3 versions prior to 18.3R2-S4, 18.3R3-S3; 18.4 versions prior to 18.4R2-S5, 18.4R3-S4; 19.1 versions prior to 19.1R2-S2, 19.1R3-S2; 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-S3, 20.1R2; 20.2 versions prior to 20.2R1-S1, 20.2R2. Una vulnerabilidad en el servicio HTTP/HTTPS utilizado por -Web, Web Authentication, Dynamic-VPN (DVPN), Firewall Authentication Pass-Through con Web-Redirect, y Captive Portal, permite a un atacante no autenticado causar una Denegación de Servicio extendida (DoS) para estos servicios mediante el envío de un gran número de peticiones específicas. Este problema afecta a: Juniper Networks Junos OS versiones 12.3 anteriores a 12.3R12-S17 en la serie EX; Versiones de 12.3X48 anteriores a 12.3X48-D105 en la serie SRX; versiones 15.1 anteriores a 15.1R7-S8; Versiones de 15.1X49 anteriores a 15.1X49-D230 en la serie SRX; versiones 16.1 anteriores a 16.1R7-S8; 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 18.3 anteriores a 18.3R2-S4, 18.3R3-S3; versiones 18.4 anteriores a 18.4R2-S5, 18.4R3-S4; versiones 19.1 anteriores a 19.1R2-S2, 19.1R3-S2; 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-S3, 20.1R2; Versiones 20.2 anteriores a 20.2R1-S1, 20.2R2 • https://kb.juniper.net/JSA11152 • CWE-125: Out-of-bounds Read CWE-770: Allocation of Resources Without Limits or Throttling •