CVE-2020-1683: Vulnerability Analysis & Exploit Details

Status: Analyzed - Last modified: 28-10-2020 Published: 16-10-2020

CVE-2020-1683
Vulnerability Scoring

7.5
/10

Attack Complexity Details

  • Attack Complexity: Low Impact
  • Attack Vector: NETWORK
  • Privileges Required: None
  • Scope: UNCHANGED
  • User Interaction: NONE

CIA Impact Definition

  • Confidentiality:
  • Integrity:
  • Availability: HIGH IMPACT

CVE-2020-1683 Vulnerability Summary

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.

Access Complexity Graph for CVE-2020-1683

Impact Analysis for CVE-2020-1683

CVE-2020-1683: Detailed Information and External References

EPSS

0.00106

EPSS %

0.44864

References

0.00106

CWE

CWE-401

Vulnerable Configurations

  • cpe:2.3:o:juniper:junos:17.4:r3:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:17.4:r3:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:18.1:r3-s5:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:18.1:r3-s5:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:18.1:r3-s6:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:18.1:r3-s6:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:18.1:r3-s7:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:18.1:r3-s7:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:18.1:r3-s8:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:18.1:r3-s8:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:18.1:r3-s9:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:18.1:r3-s9:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:18.2:r3:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:18.2:r3:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:18.2:r3-s1:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:18.2:r3-s1:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:18.2:r3-s2:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:18.2:r3-s2:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:18.2x75:-:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:18.2x75:-:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:18.2x75:d12:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:18.2x75:d12:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:18.2x75:d20:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:18.2x75:d20:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:18.2x75:d30:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:18.2x75:d30:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:18.2x75:d40:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:18.2x75:d40:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:18.2x75:d411:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:18.2x75:d411:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:18.2x75:d51:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:18.2x75:d51:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:18.3:r3:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:18.3:r3:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:18.3:r3-s1:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:18.3:r3-s1:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:18.4:r1-s4:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:18.4:r1-s4:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:18.4:r2:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:18.4:r2:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:18.4:r2-s1:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:18.4:r2-s1:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:18.4:r2-s2:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:18.4:r2-s2:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:18.4:r2-s3:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:18.4:r2-s3:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:18.4:r2-s4:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:18.4:r2-s4:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:18.4:r3:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:18.4:r3:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:19.1:r2:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:19.1:r2:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:19.1:r2-s1:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:19.1:r2-s1:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:19.2:r1:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:19.2:r1:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:19.2:r1-s1:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:19.2:r1-s1:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:19.2:r1-s2:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:19.2:r1-s2:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:19.2:r1-s3:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:19.2:r1-s3:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:19.2:r1-s4:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:19.2:r1-s4:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:19.3:-:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:19.3:-:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:19.3:r1:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:19.3:r1:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:19.3:r1-s1:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:19.3:r1-s1:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:19.3:r2:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:19.3:r2:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:19.3:r2-s1:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:19.3:r2-s1:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:19.3:r2-s2:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:19.3:r2-s2:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:19.3:r2-s3:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:19.3:r2-s3:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:19.3:r2-s4:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:19.3:r2-s4:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:19.4:r1:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:19.4:r1:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:19.4:r1-s1:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:19.4:r1-s1:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:19.4:r1-s2:*:*:*:*:*:*
    cpe:2.3:o:juniper:junos:19.4:r1-s2:*:*:*:*:*:*

CVSS3 Source

sirt@juniper.net

CVSS3 Type

Primary

CVSS3 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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