6.5
MEDIUM
CVE-2021-0237
Juniper Networks Junos OS Denial of Service in Packet Forwarding Engine
Description
On Juniper Networks EX4300-MP Series, EX4600 Series, EX4650 Series, QFX5K Series deployed as a Virtual Chassis with a specific Layer 2 circuit configuration, Packet Forwarding Engine manager (FXPC) process may crash and restart upon receipt of specific layer 2 frames. Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS on EX4300-MP Series, EX4600 Series, EX4650 Series, QFX5K Series 15.1 versions prior to 15.1R7-S9; 17.3 versions prior to 17.3R3-S11; 17.4 versions prior to 17.4R2-S13, 17.4R3-S4, 17.4R3-S5; 18.2 versions prior to 18.2R3-S8; 18.3 versions prior to 18.3R3-S4; 18.4 versions prior to 18.4R2-S7, 18.4R3-S6; 19.1 versions prior to 19.1R3-S4; 19.2 versions prior to 19.2R1-S6, 19.2R3-S1; 19.3 versions prior to 19.3R3-S1; 19.4 versions prior to 19.4R2-S4, 19.4R3-S1; 20.1 versions prior to 20.1R2; 20.2 versions prior to 20.2R2, 20.2R3; 20.3 versions prior to 20.3R1-S2, 20.3R2;
INFO
Published Date :
April 22, 2021, 8:15 p.m.
Last Modified :
July 23, 2021, 7:06 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
2.8
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-2021-0237.
| URL | Resource |
|---|---|
| https://kb.juniper.net/JSA11132 | 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-2021-0237 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-0237 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 -
Reanalysis by [email protected]
Jul. 23, 2021
Action Type Old Value New Value Removed CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P) Added CVSS V2 NIST (AV:A/AC:L/Au:N/C:N/I:N/A:P) Removed CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added CVSS V3.1 NIST AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H -
Initial Analysis by [email protected]
Apr. 27, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://kb.juniper.net/JSA11132 No Types Assigned https://kb.juniper.net/JSA11132 Vendor Advisory Added CWE NIST NVD-CWE-noinfo Added CPE Configuration AND OR *cpe:2.3:o:juniper:junos:15.1:-:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:15.1:a1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:15.1:f:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:15.1:f1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:15.1:f2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:15.1:f2-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:15.1:f2-s2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:15.1:f2-s3:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:15.1:f2-s4:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:15.1:f3:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:15.1:f4:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:15.1:f5:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:15.1:f5-s7:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:15.1:f6:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:15.1:f6-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:15.1:f6-s10:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:15.1:f6-s12:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:15.1:f6-s2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:15.1:f6-s3:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:15.1:f6-s4:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:15.1:f6-s5:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:15.1:f6-s6:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:15.1:f6-s7:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:15.1:f6-s8:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:15.1:f6-s9:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:15.1:f7:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:15.1:r:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:15.1:r1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:15.1:r2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:15.1:r3:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:15.1:r4:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:15.1:r4-s7:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:15.1:r4-s8:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:15.1:r4-s9:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:15.1:r5:*:*:*:*:*:* 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*cpe:2.3:o:juniper:junos:17.4:r1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:17.4:r1-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:17.4:r1-s2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:17.4:r1-s3:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:17.4:r1-s4:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:17.4:r1-s5:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:17.4:r1-s6:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:17.4:r1-s7:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:17.4:r2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:17.4:r2-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:17.4:r2-s10:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:17.4:r2-s11:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:17.4:r2-s12:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:17.4:r2-s2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:17.4:r2-s3:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:17.4:r2-s4:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:17.4:r2-s5:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:17.4:r2-s6:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:17.4:r2-s7:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:17.4:r2-s8:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:17.4:r2-s9:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:17.4:r3:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:17.4:r3-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:17.4:r3-s2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:17.4:r3-s3:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:18.2:-:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:18.2:r1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:18.2:r1:-:*:*:*:*:* *cpe:2.3:o:juniper:junos:18.2:r1-s2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:18.2:r1-s3:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:18.2:r1-s4:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:18.2:r1-s5:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:18.2:r2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:18.2:r2-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:18.2:r2-s2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:18.2:r2-s3:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:18.2:r2-s4:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:18.2:r2-s5:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:18.2:r2-s6:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:18.2:r2-s7:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:18.2:r3:*:*:*:*:*:* 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*cpe:2.3:o:juniper:junos:18.4:r3-s2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:18.4:r3-s3:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:18.4:r3-s4:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:18.4:r3-s5:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.1:-:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.1:r1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.1:r1-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.1:r1-s2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.1:r1-s3:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.1:r1-s4:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.1:r1-s5:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.1:r2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.1:r2-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.1:r3:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.1:r3-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.1:r3-s2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.1:r3-s3:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.2:-:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.2:r1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.2:r1-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.2:r1-s2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.2:r1-s3:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.2:r1-s4:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.2:r1-s5:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.2:r2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.2:r2-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.2:r3:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.3:-:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.3:r1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.3:r1-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.3:r2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.3:r2-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.3:r2-s2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.3:r2-s3:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.3:r2-s4:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.3:r2-s5:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.3:r3:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.4:r1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.4:r1-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.4:r1-s2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.4:r2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.4:r2-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.4:r2-s2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.4:r2-s3:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.4:r3:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:20.1:r1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:20.1:r1-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:20.1:r1-s2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:20.1:r1-s3:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:20.1:r1-s4:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:20.2:r1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:20.2:r1-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:20.2:r1-s2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:20.2:r1-s3:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:20.3:r1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:20.3:r1-s1:*:*:*:*:*:* OR cpe:2.3:h:juniper:ex4300-mp:-:*:*:*:*:*:*:* cpe:2.3:h:juniper:ex4600:-:*:*:*:*:*:*:* cpe:2.3:h:juniper:ex4650:-:*:*:*:*:*:*:* cpe:2.3:h:juniper:qfx5100:-:*:*:*:*:*:*:* cpe:2.3:h:juniper:qfx5110:-:*:*:*:*:*:*:* cpe:2.3:h:juniper:qfx5120:-:*:*:*:*:*:*:* cpe:2.3:h:juniper:qfx5130:-:*:*:*:*:*:*:* cpe:2.3:h:juniper:qfx5200:-:*:*:*:*:*:*:* cpe:2.3:h:juniper:qfx5210:-:*:*:*:*:*:*:* cpe:2.3:h:juniper:qfx5220:-:*:*:*:*:*:*:*
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-2021-0237 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-2021-0237
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
0.22873
percentile
CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability