Vulnerability · Published Apr 8, 2020 · Assigned by juniper

CVE-2020-1626Junos OS Evolved: Denial of Service vulnerability in processing high rate of specific packets

High 7.5

In plain English

A high-severity security flaw in Junos OS Evolved from Juniper Networks. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.4% (higher than 72% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)1.4%top 28.1% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

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 products (as reported)

Vendor	Product	Versions
Juniper Networks	Junos OS Evolved	unspecified – before 19.1R1-EVO

References

https://tools.ietf.org/html/rfc6192 x_refsource_MISC
https://kb.juniper.net/JSA11005 x_refsource_CONFIRM