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CVE-2020-1625

The kernel memory usage represented as "temp" via 'show system virtual-memory' may constantly increase when Integrated Routing and Bridging (IRB) is configured with multiple underlay physical interfaces, and one interface flaps. This memory leak can affect running daemons (processes), leading to an extended Denial of Service (DoS) condition. Usage of "temp" virtual memory, shown here by a constantly increasing value of outstanding Requests, can be monitored by executing the 'show system virtual-memory' command as shown below: user@junos> show system virtual-memory |match "fpc|type|temp" fpc0: -------------------------------------------------------------------------- Type InUse MemUse HighUse Requests Size(s) temp 2023 431K - 10551 16,32,64,128,256,512,1024,2048,4096,65536,262144,1048576,2097152,4194304,8388608 fpc1: -------------------------------------------------------------------------- Type InUse MemUse HighUse Requests Size(s) temp 2020 431K - 6460 16,32,64,128,256,512,1024,2048,4096,65536,262144,1048576,2097152,4194304,8388608 user@junos> show system virtual-memory |match "fpc|type|temp" fpc0: -------------------------------------------------------------------------- Type InUse MemUse HighUse Requests Size(s) temp 2023 431K - 16101 16,32,64,128,256,512,1024,2048,4096,65536,262144,1048576,2097152,4194304,8388608 fpc1: -------------------------------------------------------------------------- Type InUse MemUse HighUse Requests Size(s) temp 2020 431K - 6665 16,32,64,128,256,512,1024,2048,4096,65536,262144,1048576,2097152,4194304,8388608 user@junos> show system virtual-memory |match "fpc|type|temp" fpc0: -------------------------------------------------------------------------- Type InUse MemUse HighUse Requests Size(s) temp 2023 431K - 21867 16,32,64,128,256,512,1024,2048,4096,65536,262144,1048576,2097152,4194304,8388608 fpc1: -------------------------------------------------------------------------- Type InUse MemUse HighUse Requests Size(s) temp 2020 431K - 6858 16,32,64,128,256,512,1024,2048,4096,65536,262144,1048576,2097152,4194304,8388608 This issue affects Juniper Networks Junos OS: 16.1 versions prior to 16.1R7-S6; 17.1 versions prior to 17.1R2-S11, 17.1R3-S1; 17.2 versions prior to 17.2R2-S8, 17.2R3-S3; 17.2X75 versions prior to 17.2X75-D44; 17.3 versions prior to 17.3R2-S5, 17.3R3-S6; 17.4 versions prior to 17.4R2-S5, 17.4R3; 18.1 versions prior to 18.1R3-S7; 18.2 versions prior to 18.2R2-S5, 18.2R3; 18.2X75 versions prior to 18.2X75-D33, 18.2X75-D411, 18.2X75-D420, 18.2X75-D60; 18.3 versions prior to 18.3R1-S5, 18.3R2-S3, 18.3R3; 18.4 versions prior to 18.4R2-S2, 18.4R3; 19.1 versions prior to 19.1R1-S3, 19.1R2; 19.2 versions prior to 19.2R1-S3, 19.2R2. This issue does not affect Juniper Networks Junos OS 12.3 and 15.1.

Published

2020-04-08T20:15:13.917

Last Modified

2024-11-21T05:11:01.550

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.5 (MEDIUM)

CVSSv2 Vector

AV:A/AC:L/Au:N/C:N/I:N/A:P

  • Access Vector: ADJACENT_NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: PARTIAL
Exploitability Score

6.5

Impact Score

2.9

Weaknesses
  • Type: Secondary
    CWE-400
  • Type: Primary
    CWE-401
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System juniper junos 16.1 Yes
Operating System juniper junos 16.1 Yes
Operating System juniper junos 16.1 Yes
Operating System juniper junos 16.1 Yes
Operating System juniper junos 16.1 Yes
Operating System juniper junos 16.1 Yes
Operating System juniper junos 16.1 Yes
Operating System juniper junos 16.1 Yes
Operating System juniper junos 16.1 Yes
Operating System juniper junos 16.1 Yes
Operating System juniper junos 16.1 Yes
Operating System juniper junos 16.1 Yes
Operating System juniper junos 16.1 Yes
Operating System juniper junos 16.1 Yes
Operating System juniper junos 16.1 Yes
Operating System juniper junos 16.1 Yes
Operating System juniper junos 16.1 Yes
Operating System juniper junos 16.1 Yes
Operating System juniper junos 16.1 Yes
Operating System juniper junos 16.1 Yes
Operating System juniper junos 16.1 Yes
Operating System juniper junos 17.1 Yes
Operating System juniper junos 17.1 Yes
Operating System juniper junos 17.1 Yes
Operating System juniper junos 17.1 Yes
Operating System juniper junos 17.1 Yes
Operating System juniper junos 17.1 Yes
Operating System juniper junos 17.1 Yes
Operating System juniper junos 17.1 Yes
Operating System juniper junos 17.1 Yes
Operating System juniper junos 17.1 Yes
Operating System juniper junos 17.1 Yes
Operating System juniper junos 17.1 Yes
Operating System juniper junos 17.1 Yes
Operating System juniper junos 17.1 Yes
Operating System juniper junos 17.2 Yes
Operating System juniper junos 17.2 Yes
Operating System juniper junos 17.2 Yes
Operating System juniper junos 17.2 Yes
Operating System juniper junos 17.2 Yes
Operating System juniper junos 17.2 Yes
Operating System juniper junos 17.2 Yes
Operating System juniper junos 17.2 Yes
Operating System juniper junos 17.2 Yes
Operating System juniper junos 17.2 Yes
Operating System juniper junos 17.2 Yes
Operating System juniper junos 17.2 Yes
Operating System juniper junos 17.2 Yes
Operating System juniper junos 17.2 Yes
Operating System juniper junos 17.2x75 Yes
Operating System juniper junos 17.3 Yes
Operating System juniper junos 17.3 Yes
Operating System juniper junos 17.3 Yes
Operating System juniper junos 17.3 Yes
Operating System juniper junos 17.3 Yes
Operating System juniper junos 17.3 Yes
Operating System juniper junos 17.3 Yes
Operating System juniper junos 17.3 Yes
Operating System juniper junos 17.3 Yes
Operating System juniper junos 17.3 Yes
Operating System juniper junos 17.3 Yes
Operating System juniper junos 17.3 Yes
Operating System juniper junos 17.3 Yes
Operating System juniper junos 17.4 Yes
Operating System juniper junos 17.4 Yes
Operating System juniper junos 17.4 Yes
Operating System juniper junos 17.4 Yes
Operating System juniper junos 17.4 Yes
Operating System juniper junos 17.4 Yes
Operating System juniper junos 17.4 Yes
Operating System juniper junos 17.4 Yes
Operating System juniper junos 17.4 Yes
Operating System juniper junos 17.4 Yes
Operating System juniper junos 17.4 Yes
Operating System juniper junos 17.4 Yes
Operating System juniper junos 17.4 Yes
Operating System juniper junos 18.1 Yes
Operating System juniper junos 18.1 Yes
Operating System juniper junos 18.1 Yes
Operating System juniper junos 18.1 Yes
Operating System juniper junos 18.1 Yes
Operating System juniper junos 18.1 Yes
Operating System juniper junos 18.1 Yes
Operating System juniper junos 18.1 Yes
Operating System juniper junos 18.1 Yes
Operating System juniper junos 18.1 Yes
Operating System juniper junos 18.1 Yes
Operating System juniper junos 18.2 Yes
Operating System juniper junos 18.2 Yes
Operating System juniper junos 18.2 Yes
Operating System juniper junos 18.2 Yes
Operating System juniper junos 18.2 Yes
Operating System juniper junos 18.2 Yes
Operating System juniper junos 18.2 Yes
Operating System juniper junos 18.2x75 Yes
Operating System juniper junos 18.2x75 Yes
Operating System juniper junos 18.2x75 Yes
Operating System juniper junos 18.2x75 Yes
Operating System juniper junos 18.3 Yes
Operating System juniper junos 18.3 Yes
Operating System juniper junos 18.3 Yes
Operating System juniper junos 18.3 Yes
Operating System juniper junos 18.3 Yes
Operating System juniper junos 18.3 Yes
Operating System juniper junos 18.3 Yes
Operating System juniper junos 18.3 Yes
Operating System juniper junos 18.3 Yes
Operating System juniper junos 18.4 Yes
Operating System juniper junos 18.4 Yes
Operating System juniper junos 18.4 Yes
Operating System juniper junos 18.4 Yes
Operating System juniper junos 18.4 Yes
Operating System juniper junos 18.4 Yes
Operating System juniper junos 18.4 Yes
Operating System juniper junos 19.1 Yes
Operating System juniper junos 19.1 Yes
Operating System juniper junos 19.1 Yes
Operating System juniper junos 19.1 Yes
Operating System juniper junos 19.2 Yes
Operating System juniper junos 19.2 Yes
Operating System juniper junos 19.2 Yes
Operating System juniper junos 19.2 Yes
References