Vulnerability · Published Jul 17, 2020 · Assigned by juniper

CVE-2020-1651Junos OS: MX Series: PFE on the line card may crash due to memory leak.

Medium 6.5

In plain English

A medium-severity security flaw in Junos OS 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 0.5% (higher than 40% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.5%top 60.5% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

On Juniper Networks MX series, receipt of a stream of specific Layer 2 frames may cause a memory leak resulting in the packet forwarding engine (PFE) on the line card to crash and restart, causing traffic interruption. By continuously sending this stream of specific layer 2 frame, an attacker connected to the same broadcast domain can repeatedly crash the PFE, causing a prolonged Denial of Service (DoS). This issue affects Juniper Networks Junos OS on MX Series: 17.2 versions prior to 17.2R3-S4; 17.2X75 versions prior to 17.2X75-D105.19; 17.3 versions prior to 17.3R3-S7; 17.4 versions prior to 17.4R1-S3, 17.4R2; 18.1 versions prior to 18.1R2. This issue does not affect Juniper Networks Junos OS releases prior to 17.2R1.

Affected products (as reported)

Vendor	Product	Versions
Juniper Networks	Junos OS	17.2 – before 17.2R3-S417.2X75 – before 17.2X75-D105.1917.3 – before 17.3R3-S717.4 – before 17.4R1-S3, 17.4R218.1 – before 18.1R2

Weakness: CWE-19 · Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

https://kb.juniper.net/JSA11038 x_refsource_CONFIRM