CVE-2021-31354
Juniper Junos OS Evolved JAL License Client OOB Access Vulnerability
Description
An Out Of Bounds (OOB) access vulnerability in the handling of responses by a Juniper Agile License (JAL) Client in Juniper Networks Junos OS and Junos OS Evolved, configured in Network Mode (to use Juniper Agile License Manager) may allow an attacker to cause a partial Denial of Service (DoS), or lead to remote code execution (RCE). The vulnerability exists in the packet parsing logic on the client that processes the response from the server using a custom protocol. An attacker with control of a JAL License Manager, or with access to the local broadcast domain, may be able to spoof a new JAL License Manager and/or craft a response to the Junos OS License Client, leading to exploitation of this vulnerability. This issue only affects Junos systems configured in Network Mode. Systems that are configured in Standalone Mode (the default mode of operation for all systems) are not vulnerable to this issue. This issue affects: Juniper Networks Junos OS: 19.2 versions prior to 19.2R3-S3; 19.3 versions prior to 19.3R3-S3; 20.1 versions prior to 20.1R2-S2, 20.1R3-S1; 20.2 versions prior to 20.2R3-S2; 20.3 versions prior to 20.3R3; 20.4 versions prior to 20.4R3; 21.1 versions prior to 21.1R2. Juniper Networks Junos OS Evolved: version 20.1R1-EVO and later versions, prior to 21.2R2-EVO. This issue does not affect Juniper Networks Junos OS versions prior to 19.2R1.
INFO
Published Date :
Oct. 19, 2021, 7:15 p.m.
Last Modified :
Oct. 25, 2021, 9:52 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
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-2021-31354.
| URL | Resource |
|---|---|
| https://kb.juniper.net/JSA11219 | 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).
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The following list is the news that have been mention
CVE-2021-31354 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-31354 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.
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CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Oct. 25, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:A/AC:M/Au:N/C:P/I:P/A:P) Added CVSS V3.1 NIST AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://kb.juniper.net/JSA11219 No Types Assigned https://kb.juniper.net/JSA11219 Vendor Advisory Added CWE NIST CWE-125 Added CPE Configuration OR *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:r1-s6:*:*:*:*:*:* *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:19.2:r3-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.2:r3-s2:*:*:*:*:*:* *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:19.3:r3-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.3:r3-s2:*:*:*:*:*:* *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:20.1:r2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:20.1:r2-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:20.1:r3:*:*:*:*:*:* *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:20.2:r2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:20.2:r2-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:20.2:r2-s2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:20.2:r2-s3:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:20.2:r3:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:20.2:r3-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:20.3:r1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:20.3:r1-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:20.3:r2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:20.3:r2-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:20.4:r1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:20.4:r1-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:20.4:r2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:20.4:r2-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:21.1:r1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:21.1:r1-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_os_evolved:20.1:r1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_os_evolved:20.1:r1-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_os_evolved:20.1:r2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_os_evolved:20.1:r2-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_os_evolved:20.1:r2-s2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_os_evolved:20.1:r2-s3:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_os_evolved:20.1:r2-s4:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_os_evolved:20.1:r2-s5:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_os_evolved:20.1:r3:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_os_evolved:20.2:-:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_os_evolved:20.2:r1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_os_evolved:20.2:r1-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_os_evolved:20.2:r2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_os_evolved:20.2:r2-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_os_evolved:20.2:r3:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_os_evolved:20.3:-:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_os_evolved:20.3:r1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_os_evolved:20.3:r1-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_os_evolved:20.3:r1-s2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_os_evolved:20.3:r1-s3:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_os_evolved:20.3:r2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_os_evolved:20.4:r1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_os_evolved:20.4:r1-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_os_evolved:20.4:r1-s2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_os_evolved:20.4:r2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_os_evolved:20.4:r2-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_os_evolved:20.4:r2-s2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_os_evolved:20.4:r2-s3:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_os_evolved:20.4:r3:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_os_evolved:20.4:r3-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_os_evolved:21.1:-:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_os_evolved:21.1:r1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_os_evolved:21.1:r1-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_os_evolved:21.1:r2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_os_evolved:21.2:r1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_os_evolved:21.2:r1-s1:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-31354 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-2021-31354
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.22 }} 0.04%
score
0.61065
percentile