Learn about CVE-2020-1683, a vulnerability in Juniper Networks Junos OS causing memory leaks via SNMP polling, potentially resulting in kernel crashes. Find mitigation steps and necessary updates.
On Juniper Networks Junos OS devices, a specific SNMP OID poll causes a memory leak leading to a kernel crash (vmcore) and potential impacts on device processes.
Understanding CVE-2020-1683
What is CVE-2020-1683?
This CVE involves a memory leak issue on Juniper Networks Junos OS devices triggered by a specific SNMP OID poll, potentially resulting in a kernel crash.
The Impact of CVE-2020-1683
The vulnerability can lead to a kernel crash due to memory leaks via SNMP polling, affecting system stability and potentially disrupting critical services.
Technical Details of CVE-2020-1683
Vulnerability Description
The SNMP OID poll on Junos OS devices causes a memory leak, which can ultimately lead to a kernel crash (vmcore) and impact other device processes.
Affected Systems and Versions
Exploitation Mechanism
The vulnerability is triggered by a specific SNMP OID poll, resulting in a memory leak that can compromise system stability.
Mitigation and Prevention
Immediate Steps to Take
Long-Term Security Practices
Patching and Updates
Ensure the Junos OS is updated to versions 17.4R3-S1, 18.1R3-S10, 18.2R3-S3, 18.2X75-D41, 18.3R3-S2, 18.4R2-S5, 19.1R2-S2, 19.2R1-S5, 19.3R2-S5, 19.4R1-S3, 20.1R1, or subsequent releases.