CVSS: 7.5EPSS: 0%CPEs: 149EXPL: 0CVE-2021-0227 – Junos OS: SRX Series: Denial of Service in J-Web upon receipt of crafted HTTP packets
https://notcve.org/view.php?id=CVE-2021-0227
An improper restriction of operations within the bounds of a memory buffer vulnerability in Juniper Networks Junos OS J-Web on SRX Series devices allows an attacker to cause Denial of Service (DoS) by sending certain crafted HTTP packets. Continued receipt and processing of these packets will create a sustained Denial of Service (DoS) condition. When this issue occurs, web-management, NTP daemon (ntpd) and Layer 2 Control Protocol process (L2CPD) daemons might crash. This issue affects Juniper Networks Junos OS on SRX Series: 17.3 versions prior to 17.3R3-S9; 17.4 versions prior to 17.4R2-S11, 17.4R3-S2; 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-S4; 19.1 versions prior to 19.1R3-S2; 19.2 versions prior to 19.2R1-S5, 19.2R3; 19.3 versions prior to 19.3R3; 19.4 versions prior to 19.4R2-S1, 19.4R3; 20.1 versions prior to 20.1R1-S2, 20.1R2; Una vulnerabilidad de restricción inapropiada de operaciones dentro de los límites de un búfer de memoria en Juniper Networks Junos OS J-Web en dispositivos de la serie SRX permite a un atacante causar una Denegación de Servicio (DoS) mediante el envío de determinados paquetes HTTP diseñados. La recepción y el procesamiento continuo de estos paquetes crearán una condición sostenida de Denegación de Servicio (DoS). • https://kb.juniper.net/JSA11122 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •
CVSS: 7.5EPSS: 0%CPEs: 10EXPL: 0CVE-2021-0226 – Junos OS Evolved: The IPv6 BGP session will flap due to receipt of a specific IPv6 packet
https://notcve.org/view.php?id=CVE-2021-0226
On Juniper Networks Junos OS Evolved devices, receipt of a specific IPv6 packet may cause an established IPv6 BGP session to terminate, creating a Denial of Service (DoS) condition. Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue does not affect IPv4 BGP sessions. This issue affects IBGP or EBGP peer sessions with IPv6. This issue affects: Juniper Networks Junos OS Evolved: 19.4 versions prior to 19.4R2-S3-EVO; 20.1 versions prior to 20.1R2-S3-EVO; 20.2 versions prior to 20.2R2-S1-EVO; 20.3 versions prior to 20.3R2-EVO. • https://kb.juniper.net/JSA11121 • CWE-665: Improper Initialization •
CVSS: 5.8EPSS: 0%CPEs: 12EXPL: 0CVE-2021-0225 – Junos OS Evolved: Stateless IP firewall filter does not work as expected
https://notcve.org/view.php?id=CVE-2021-0225
An Improper Check for Unusual or Exceptional Conditions in Juniper Networks Junos OS Evolved may cause the stateless firewall filter configuration which uses the action 'policer' in certain combinations with other options to not take effect. An administrator can use the following CLI command to see the failures with filter configuration: user@device> show log kfirewall-agent.log | match ERROR Jul 23 14:16:03 ERROR: filter not supported This issue affects Juniper Networks Junos OS Evolved: Versions 19.1R1-EVO and above prior to 20.3R1-S2-EVO, 20.3R2-EVO. This issue does not affect Juniper Networks Junos OS. Una Comprobación Inapropiada de Condiciones Inusuales o Excepcionales en Juniper Networks Junos OS Evolved, puede causar que la configuración del filtro de firewall sin estado que usa la acción "policer" en determinadas combinaciones con otras opciones no surta efecto. Un administrador puede usar el siguiente comando CLI para visualizar los fallos con la configuración del filtro: user@device) show log kfirewall-agent.log | match ERROR Jul 23 14:16:03 ERROR: filter not supported. • https://kb.juniper.net/JSA11120 • CWE-754: Improper Check for Unusual or Exceptional Conditions •
CVSS: 6.5EPSS: 0%CPEs: 181EXPL: 0CVE-2021-0224 – Junos OS: ANCPD core when hitting maximum-discovery-table-entries limit
https://notcve.org/view.php?id=CVE-2021-0224
A vulnerability in the handling of internal resources necessary to bring up a large number of Layer 2 broadband remote access subscriber (BRAS) nodes in Juniper Networks Junos OS can cause the Access Node Control Protocol daemon (ANCPD) to crash and restart, leading to a Denial of Service (DoS) condition. Continued processing of spoofed subscriber nodes will create a sustained Denial of Service (DoS) condition. When the number of subscribers attempting to connect exceeds the configured maximum-discovery-table-entries value, the subscriber fails to map to an internal neighbor entry, causing the ANCPD process to crash. This issue affects Juniper Networks Junos OS: All versions prior to 17.3R3-S12; 17.4 versions prior to 17.4R2-S13; 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, 18.4R3-S8; 19.1 versions prior to 19.1R3-S4; 19.2 versions prior to 19.2R3-S2; 19.3 versions prior to 19.3R3-S1; 19.4 versions prior to 19.4R3-S1; 20.1 versions prior to 20.1R2; 20.2 versions prior to 20.2R2; 20.3 versions prior to 20.3R2. Una vulnerabilidad en el manejo de los recursos internos necesarios para activar una gran cantidad de nodos de broadband remote access subscriber (BRAS) de Capa 2 en Juniper Networks Junos OS puede causar que el demonio Access Node Control Protocol se bloquee y reinicie, conllevando a una condición de Denegación de Servicio (DoS) sostenida. • https://kb.juniper.net/JSA11119 • CWE-770: Allocation of Resources Without Limits or Throttling •
CVSS: 6.5EPSS: 0%CPEs: 102EXPL: 0CVE-2021-0216 – Junos OS: ACX5448, ACX710: BFD sessions might flap due to high rate of transit ARP packets
https://notcve.org/view.php?id=CVE-2021-0216
A vulnerability in Juniper Networks Junos OS running on the ACX5448 and ACX710 platforms may cause BFD sessions to flap when a high rate of transit ARP packets are received. This, in turn, may impact routing protocols and network stability, leading to a Denial of Service (DoS) condition. When a high rate of transit ARP packets are exceptioned to the CPU and BFD flaps, the following log messages may be seen: bfdd[15864]: BFDD_STATE_UP_TO_DOWN: BFD Session 192.168.14.3 (IFL 232) state Up -> Down LD/RD(17/19) Up time:11:38:17 Local diag: CtlExpire Remote diag: None Reason: Detect Timer Expiry. bfdd[15864]: BFDD_TRAP_SHOP_STATE_DOWN: local discriminator: 17, new state: down, interface: irb.998, peer addr: 192.168.14.3 rpd[15839]: RPD_ISIS_ADJDOWN: IS-IS lost L2 adjacency to peer on irb.998, reason: BFD Session Down bfdd[15864]: BFDD_TRAP_SHOP_STATE_UP: local discriminator: 17, new state: up, interface: irb.998, peer addr: 192.168.14.3 This issue only affects the ACX5448 Series and ACX710 Series routers. No other products or platforms are affected by this vulnerability. This issue affects Juniper Networks Junos OS: 18.2 versions prior to 18.2R3-S8 on ACX5448; 18.3 versions prior to 18.3R3-S5 on ACX5448; 18.4 versions prior to 18.4R1-S6, 18.4R3-S7 on ACX5448; 19.1 versions prior to 19.1R3-S5 on ACX5448; 19.2 versions prior to 19.2R2, 19.2R3 on ACX5448; 19.3 versions prior to 19.3R3 on ACX5448; 19.4 versions prior to 19.4R3 on ACX5448; 20.1 versions prior to 20.1R2 on ACX5448; 20.2 versions prior to 20.2R2 on ACX5448 and ACX710. • https://kb.juniper.net/JSA11118 •