6.5
MEDIUM
CVE-2021-0292
Juniper Networks Junos OS Evolved ARP Daemon and Network Discovery Protocol Uncontrolled Resource Consumption Denial of Service
Description

An Uncontrolled Resource Consumption vulnerability in the ARP daemon (arpd) and Network Discovery Protocol (ndp) process of Juniper Networks Junos OS Evolved allows a malicious attacker on the local network to consume memory resources, ultimately resulting in a Denial of Service (DoS) condition. Link-layer functions such as IPv4 and/or IPv6 address resolution may be impacted, leading to traffic loss. The processes do not recover on their own and must be manually restarted. Changes in memory usage can be monitored using the following shell commands (header shown for clarity): user@router:/var/log# ps aux | grep arpd USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 31418 59.0 0.7 *5702564* 247952 ? xxx /usr/sbin/arpd --app-name arpd -I object_select --shared-objects-mode 3 user@router:/var/log# ps aux | grep arpd USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 31418 49.1 1.0 *5813156* 351184 ? xxx /usr/sbin/arpd --app-name arpd -I object_select --shared-objects-mode 3 Memory usage can be monitored for the ndp process in a similar fashion: user@router:/var/log# ps aux | grep ndp USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 14935 0.0 0.1 *5614052* 27256 ? Ssl Jun15 0:17 /usr/sbin/ndp -I no_tab_chk,object_select --app-name ndp --shared-obje user@router:/var/log# ps aux | grep ndp USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 14935 0.0 0.1 *5725164* 27256 ? Ssl Jun15 0:17 /usr/sbin/ndp -I no_tab_chk,object_select --app-name ndp --shared-obje This issue affects Juniper Networks Junos OS Evolved: 19.4 versions prior to 19.4R2-S3-EVO; 20.1 versions prior to 20.1R2-S4-EVO; all versions of 20.2-EVO. This issue does not affect Juniper Networks Junos OS Evolved versions prior to 19.4R2-EVO.

INFO

Published Date :

July 15, 2021, 8:15 p.m.

Last Modified :

Oct. 25, 2021, 3:20 p.m.

Remotely Exploitable :

No

Impact Score :

3.6

Exploitability Score :

2.8
Affected Products

The following products are affected by CVE-2021-0292 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Juniper junos_os_evolved
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-0292.

URL Resource
https://kb.juniper.net/JSA11194 Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-0292 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-0292 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CPE Deprecation Remap by [email protected]

    Oct. 25, 2021

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:o:juniper:junos_evolved:19.4:r1:*:*:*:*:*:* OR *cpe:2.3:o:juniper:junos_os_evolved:19.4:r1:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Oct. 25, 2021

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:o:juniper:junos_evolved:20.1:r2:*:*:*:*:*:* OR *cpe:2.3:o:juniper:junos_os_evolved:20.1:r2:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Oct. 25, 2021

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:o:juniper:junos_evolved:20.1:r2-s1:*:*:*:*:*:* OR *cpe:2.3:o:juniper:junos_os_evolved:20.1:r2-s1:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Oct. 25, 2021

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:o:juniper:junos_evolved:20.1:r2-s2:*:*:*:*:*:* OR *cpe:2.3:o:juniper:junos_os_evolved:20.1:r2-s2:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Oct. 25, 2021

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:o:juniper:junos_evolved:20.1:r1:*:*:*:*:*:* OR *cpe:2.3:o:juniper:junos_os_evolved:20.1:r1:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Oct. 25, 2021

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:o:juniper:junos_evolved:20.1:r1-s1:*:*:*:*:*:* OR *cpe:2.3:o:juniper:junos_os_evolved:20.1:r1-s1:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Oct. 23, 2021

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:o:juniper:junos_evolved:19.4:r2:*:*:*:*:*:* OR *cpe:2.3:o:juniper:junos_os_evolved:19.4:r2:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Oct. 23, 2021

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:o:juniper:junos_evolved:19.4:r2-s2:*:*:*:*:*:* OR *cpe:2.3:o:juniper:junos_os_evolved:19.4:r2-s2:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Oct. 23, 2021

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:o:juniper:junos_evolved:20.2:-:*:*:*:*:*:* OR *cpe:2.3:o:juniper:junos_os_evolved:20.2:-:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Oct. 23, 2021

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:o:juniper:junos_evolved:20.1:r2-s3:*:*:*:*:*:* OR *cpe:2.3:o:juniper:junos_os_evolved:20.1:r2-s3:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Oct. 23, 2021

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:o:juniper:junos_evolved:20.1:-:*:*:*:*:*:* OR *cpe:2.3:o:juniper:junos_os_evolved:20.1:-:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Oct. 23, 2021

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:o:juniper:junos_evolved:19.4:r2-s1:*:*:*:*:*:* OR *cpe:2.3:o:juniper:junos_os_evolved:19.4:r2-s1:*:*:*:*:*:*
  • Initial Analysis by [email protected]

    Jul. 29, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:A/AC:L/Au:N/C:N/I:N/A:P)
    Added CVSS V3.1 NIST AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type https://kb.juniper.net/JSA11194 No Types Assigned https://kb.juniper.net/JSA11194 Vendor Advisory
    Added CWE NIST CWE-400
    Added CPE Configuration OR *cpe:2.3:o:juniper:junos_evolved:19.4:r1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_evolved:19.4:r2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_evolved:19.4:r2-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_evolved:19.4:r2-s2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_evolved:20.1:-:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_evolved:20.1:r1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_evolved:20.1:r1-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_evolved:20.1:r2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_evolved:20.1:r2-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_evolved:20.1:r2-s2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_evolved:20.1:r2-s3:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_evolved:20.2:-:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Jul. 15, 2021

    Action Type Old Value New Value
    Changed Description An Uncontrolled Resource Consumption vulnerability in the ARP daemon (arpd) and Network Discovery Protocol (ndp) process of Juniper Networks Junos OS Evolved allows a malicious attacker on the local network to consume memory resources, ultimately resulting in a Denial of Service (DoS) condition. Link-layer functions such as IPv4 and/or IPv6 address resolution may be impacted, leading to traffic loss. The processes do not recover on their own and must be manually restarted. Changes in memory usage can be monitored using the following shell commands (header shown for clarity): user@router:/var/log# ps aux | grep arpd USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 31418 59.0 0.7 *5702564* 247952 ? xxx /usr/sbin/arpd --app-name arpd -I object_select --shared-objects-mode 3 user@router:/var/log# ps aux | grep arpd USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 31418 49.1 1.0 *5813156* 351184 ? xxx /usr/sbin/arpd --app-name arpd -I object_select --shared-objects-mode 3 Memory usage can be monitored for the ndp process in a similar fashion: user@router:/var/log# ps aux | grep ndp USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 14935 0.0 0.1 *5614052* 27256 ? Ssl Jun15 0:17 /usr/sbin/ndp -I no_tab_chk,object_select --app-name ndp --shared-obje user@router:/var/log# ps aux | grep ndp USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 14935 0.0 0.1 *5725164* 27256 ? Ssl Jun15 0:17 /usr/sbin/ndp -I no_tab_chk,object_select --app-name ndp --shared-obje This issue affects Juniper Networks Junos OS Evolved: 19.4 versions prior to 19.4R2-S3-EVO; 20.1 versions prior to 20.1R2-S4-EVO; all versions of 20.2-EVO. This issue does not affect Juniper Networks Junos OS Evolved versions prior to 19.4R2-EVO. An Uncontrolled Resource Consumption vulnerability in the ARP daemon (arpd) and Network Discovery Protocol (ndp) process of Juniper Networks Junos OS Evolved allows a malicious attacker on the local network to consume memory resources, ultimately resulting in a Denial of Service (DoS) condition. Link-layer functions such as IPv4 and/or IPv6 address resolution may be impacted, leading to traffic loss. The processes do not recover on their own and must be manually restarted. Changes in memory usage can be monitored using the following shell commands (header shown for clarity): user@router:/var/log# ps aux | grep arpd USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 31418 59.0 0.7 *5702564* 247952 ? xxx /usr/sbin/arpd --app-name arpd -I object_select --shared-objects-mode 3 user@router:/var/log# ps aux | grep arpd USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 31418 49.1 1.0 *5813156* 351184 ? xxx /usr/sbin/arpd --app-name arpd -I object_select --shared-objects-mode 3 Memory usage can be monitored for the ndp process in a similar fashion: user@router:/var/log# ps aux | grep ndp USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 14935 0.0 0.1 *5614052* 27256 ? Ssl Jun15 0:17 /usr/sbin/ndp -I no_tab_chk,object_select --app-name ndp --shared-obje user@router:/var/log# ps aux | grep ndp USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 14935 0.0 0.1 *5725164* 27256 ? Ssl Jun15 0:17 /usr/sbin/ndp -I no_tab_chk,object_select --app-name ndp --shared-obje This issue affects Juniper Networks Junos OS Evolved: 19.4 versions prior to 19.4R2-S3-EVO; 20.1 versions prior to 20.1R2-S4-EVO; all versions of 20.2-EVO. This issue does not affect Juniper Networks Junos OS Evolved versions prior to 19.4R2-EVO.
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-0292 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-0292 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.06 }} 0.01%

score

0.23101

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability