CVE-2020-1683
Junos OS: Memory leak leads to kernel crash (vmcore) due to SNMP polling
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
On Juniper Networks Junos OS devices, a specific SNMP OID poll causes a memory leak which over time leads to a kernel crash (vmcore). Prior to the kernel crash other processes might be impacted, such as failure to establish SSH connection to the device. The administrator can monitor the output of the following command to check if there is memory leak caused by this issue: user@device> show system virtual-memory | match "pfe_ipc|kmem" pfe_ipc 147 5K - 164352 16,32,64,8192 <-- increasing vm.kmem_map_free: 127246336 <-- decreasing pfe_ipc 0 0K - 18598 32,8192 vm.kmem_map_free: 134582272 This issue affects Juniper Networks Junos OS: 17.4R3; 18.1 version 18.1R3-S5 and later versions prior to 18.1R3-S10; 18.2 version 18.2R3 and later versions prior to 18.2R3-S3; 18.2X75 version 18.2X75-D420, 18.2X75-D50 and later versions prior to 18.2X75-D430, 18.2X75-D53, 18.2X75-D60; 18.3 version 18.3R3 and later versions prior to 18.3R3-S2; 18.4 version 18.4R1-S4, 18.4R2 and later versions prior to 18.4R2-S5, 18.4R3-S1; 19.1 version 19.1R2 and later versions prior to 19.1R2-S2, 19.1R3; 19.2 version 19.2R1 and later versions prior to 19.2R1-S5, 19.2R2; 19.3 versions prior to 19.3R2-S5, 19.3R3; 19.4 versions prior to 19.4R1-S3, 19.4R2. This issue does not affect Juniper Networks Junos OS prior to 17.4R3.
En dispositivos Juniper Networks Junos OS, una encuesta de SNMP OID específica causa un filtrado de la memoria que, con el tiempo, conlleva a un bloqueo del kernel (vmcore). Antes del fallo del kernel, otros procesos pueden estar afectados, como el fallo al establecer una conexión SSH con el dispositivo. El administrador puede monitorear el resultado del siguiente comando para comprobar si existe un filtrado de memoria causado por este problema: user@device> show system virtual-memory | match "pfe_ipc|kmem" pfe_ipc 147 5K - 164352 16,32,64,8192 <-- increasing vm.kmem_map_free: 127246336 <-- decreasing pfe_ipc 0 0K - 18598 32,8192 vm.kmem_map_free: 134582272 Este problema afecta a Juniper Networks Junos OS: versión 17.4R3; 18.1 versión 18.1R3-S5 y versiones posteriores anteriores a 18.1R3-S10; 18.2 versión 18.2R3 y versiones posteriores anteriores a 18.2R3-S3; 18.2X75 versión 18.2X75-D420, 18.2X75-D50 y versiones posteriores anteriores a 18. 2X75-D430, 18.2X75-D53, 18.2X75-D60; 18.3 versión 18.3R3 y versiones posteriores anteriores a 18.3R3-S2; 18.4 versión 18.4R1-S4, 18.4R2 y versiones posteriores anteriores a 18.4R2-S5, 18.4R3-S1; 19.1 versión 19.1R2 y versiones posteriores anteriores a 19.1R2-S2, 19.1R3; 19.2 versión 19.2R1 y versiones posteriores anteriores a 19.2R1-S5, 19.2R2; 19.3 versiones anteriores a 19.3R2-S5, 19.3R3; 19.4 versiones anteriores a 19.4R1-S3, 19.4R2. Este problema no afecta a Juniper Networks Junos OS anterior a versión 17.4R3
CVSS Scores
SSVC
- Decision:-
Timeline
- 2019-11-04 CVE Reserved
- 2020-10-16 CVE Published
- 2023-07-02 EPSS Updated
- 2024-09-16 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-401: Missing Release of Memory after Effective Lifetime
CAPEC
References (1)
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 17.4 Search vendor "Juniper" for product "Junos" and version "17.4" | r3 |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 18.1 Search vendor "Juniper" for product "Junos" and version "18.1" | r3-s5 |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 18.1 Search vendor "Juniper" for product "Junos" and version "18.1" | r3-s6 |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 18.1 Search vendor "Juniper" for product "Junos" and version "18.1" | r3-s7 |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 18.1 Search vendor "Juniper" for product "Junos" and version "18.1" | r3-s8 |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 18.1 Search vendor "Juniper" for product "Junos" and version "18.1" | r3-s9 |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 18.2 Search vendor "Juniper" for product "Junos" and version "18.2" | r3 |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 18.2 Search vendor "Juniper" for product "Junos" and version "18.2" | r3-s1 |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 18.2 Search vendor "Juniper" for product "Junos" and version "18.2" | r3-s2 |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 18.2x75 Search vendor "Juniper" for product "Junos" and version "18.2x75" | - |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 18.2x75 Search vendor "Juniper" for product "Junos" and version "18.2x75" | d12 |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 18.2x75 Search vendor "Juniper" for product "Junos" and version "18.2x75" | d20 |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 18.2x75 Search vendor "Juniper" for product "Junos" and version "18.2x75" | d30 |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 18.2x75 Search vendor "Juniper" for product "Junos" and version "18.2x75" | d40 |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 18.2x75 Search vendor "Juniper" for product "Junos" and version "18.2x75" | d411 |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 18.2x75 Search vendor "Juniper" for product "Junos" and version "18.2x75" | d51 |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 18.3 Search vendor "Juniper" for product "Junos" and version "18.3" | r3 |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 18.3 Search vendor "Juniper" for product "Junos" and version "18.3" | r3-s1 |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 18.4 Search vendor "Juniper" for product "Junos" and version "18.4" | r1-s4 |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 18.4 Search vendor "Juniper" for product "Junos" and version "18.4" | r2 |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 18.4 Search vendor "Juniper" for product "Junos" and version "18.4" | r2-s1 |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 18.4 Search vendor "Juniper" for product "Junos" and version "18.4" | r2-s2 |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 18.4 Search vendor "Juniper" for product "Junos" and version "18.4" | r2-s3 |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 18.4 Search vendor "Juniper" for product "Junos" and version "18.4" | r2-s4 |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 18.4 Search vendor "Juniper" for product "Junos" and version "18.4" | r3 |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 19.1 Search vendor "Juniper" for product "Junos" and version "19.1" | r2 |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 19.1 Search vendor "Juniper" for product "Junos" and version "19.1" | r2-s1 |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 19.2 Search vendor "Juniper" for product "Junos" and version "19.2" | r1 |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 19.2 Search vendor "Juniper" for product "Junos" and version "19.2" | r1-s1 |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 19.2 Search vendor "Juniper" for product "Junos" and version "19.2" | r1-s2 |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 19.2 Search vendor "Juniper" for product "Junos" and version "19.2" | r1-s3 |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 19.2 Search vendor "Juniper" for product "Junos" and version "19.2" | r1-s4 |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 19.3 Search vendor "Juniper" for product "Junos" and version "19.3" | - |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 19.3 Search vendor "Juniper" for product "Junos" and version "19.3" | r1 |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 19.3 Search vendor "Juniper" for product "Junos" and version "19.3" | r1-s1 |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 19.3 Search vendor "Juniper" for product "Junos" and version "19.3" | r2 |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 19.3 Search vendor "Juniper" for product "Junos" and version "19.3" | r2-s1 |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 19.3 Search vendor "Juniper" for product "Junos" and version "19.3" | r2-s2 |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 19.3 Search vendor "Juniper" for product "Junos" and version "19.3" | r2-s3 |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 19.3 Search vendor "Juniper" for product "Junos" and version "19.3" | r2-s4 |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 19.4 Search vendor "Juniper" for product "Junos" and version "19.4" | r1 |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 19.4 Search vendor "Juniper" for product "Junos" and version "19.4" | r1-s1 |
Affected
| ||||||
| Juniper Search vendor "Juniper" | Junos Search vendor "Juniper" for product "Junos" | 19.4 Search vendor "Juniper" for product "Junos" and version "19.4" | r1-s2 |
Affected
| ||||||