CVE-2020-1626: Junos OS Evolved: Denial of Service vulnerability in processing high rate of specific packets
A vulnerability in Juniper Networks Junos OS Evolved may allow an attacker to cause a Denial of Service (DoS) by sending a high rate of specific packets to the device, resulting in a pfemand process crash. The pfemand process is responsible for packet forwarding on the device. By continuously sending the packet flood, an attacker can repeatedly crash the pfemand process causing a sustained Denial of Service. This issue can only be triggered by traffic sent to the device. Transit traffic does not cause this issue. This issue affects all version of Junos OS Evolved prior to 19.1R1-EVO.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Juniper Networks Junos OS Evolvedto a version that resolves this vulnerability.Fixed in 19.1R1-EVO - Upgrade
Upgrade
Juniper Networks Junos OS Evolvedto a version that resolves this vulnerability.Fixed in 19.2R1-EVO - Upgrade
Upgrade
Juniper Networks Junos OS Evolvedto a version that resolves this vulnerability.Fixed in 19.3R1-EVO
Event History
Frequently Asked Questions
What is the severity of CVE-2020-1626?
CVE-2020-1626 is classified as a high severity vulnerability due to its potential to cause a Denial of Service.
How do I fix CVE-2020-1626?
To fix CVE-2020-1626, upgrade to a patched version of Junos OS Evolved, specifically versions higher than 18.3-r1.
What systems are affected by CVE-2020-1626?
CVE-2020-1626 affects Juniper Networks Junos OS Evolved version 18.3-r1.
What effect does CVE-2020-1626 have on my system?
CVE-2020-1626 can cause the pfemand process to crash, leading to packet forwarding failures.
Can CVE-2020-1626 be exploited remotely?
Yes, CVE-2020-1626 can be exploited remotely by sending a high rate of specific packets to the affected device.