Juniper Junos OS Vulnerability (JSA11128)

high Nessus Plugin ID 178664


The remote device is missing a vendor-supplied security patch.


The version of Junos OS installed on the remote host is affected by a vulnerability as referenced in the JSA11128 advisory.

- A vulnerability in Juniper Networks Junos OS ACX500 Series, ACX4000 Series, 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 Forwarding Engine Board (FFEB) crash. Continued receipt of these packets will sustain the Denial of Service (DoS) condition. This issue affects Juniper Networks Junos OS on ACX500 Series, ACX4000 Series:
17.4 versions prior to 17.4R3-S2. (CVE-2021-0233)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.


Apply the relevant Junos software release referenced in Juniper advisory JSA11128

See Also

Plugin Details

Severity: High

ID: 178664

File Name: juniper_jsa11128.nasl

Version: 1.0

Type: combined

Published: 7/20/2023

Updated: 7/20/2023

Risk Information


Risk Factor: Low

Score: 3.6


Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2021-0233


Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:juniper:junos

Required KB Items: Host/Juniper/model, Host/Juniper/JUNOS/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 4/14/2021

Vulnerability Publication Date: 4/14/2021

Reference Information

CVE: CVE-2021-0233

JSA: JSA11128