9.8
CRITICAL
CVE-2021-1619
"Cisco IOS XE AAA Uninitialized Variable Unauthorized Configuration Manipulation and Memory Corruption"
Description
A vulnerability in the authentication, authorization, and accounting (AAA) function of Cisco IOS XE Software could allow an unauthenticated, remote attacker to bypass NETCONF or RESTCONF authentication and do either of the following: Install, manipulate, or delete the configuration of an affected device Cause memory corruption that results in a denial of service (DoS) on an affected device This vulnerability is due to an uninitialized variable. An attacker could exploit this vulnerability by sending a series of NETCONF or RESTCONF requests to an affected device. A successful exploit could allow the attacker to use NETCONF or RESTCONF to install, manipulate, or delete the configuration of a network device or to corrupt memory on the device, resulting a DoS.
INFO
Published Date :
Sept. 23, 2021, 3:15 a.m.
Last Modified :
Nov. 7, 2023, 3:28 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
3.9
Affected Products
The following products are affected by CVE-2021-1619
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.
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-2021-1619.
| URL | Resource |
|---|---|
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-aaa-Yx47ZT8Q | 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-2021-1619 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-1619 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 -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Removed CVSS V3 Cisco Systems, Inc. AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CVSS V3.1 Cisco Systems, Inc. AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H -
Reanalysis by [email protected]
Jul. 08, 2022
Action Type Old Value New Value Removed CWE NIST CWE-824 Added CWE NIST CWE-908 -
Initial Analysis by [email protected]
Oct. 07, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:P/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H Changed Reference Type https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-aaa-Yx47ZT8Q No Types Assigned https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-aaa-Yx47ZT8Q Vendor Advisory Added CWE NIST CWE-824 Added CPE Configuration OR *cpe:2.3:o:cisco:ios_xe:16.3.1:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.3.1a:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.3.2:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.3.3:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.3.4:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.3.5:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.3.5b:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.3.6:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.3.7:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.3.8:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.3.9:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.3.10:*:*:*:*:*:*:* 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*cpe:2.3:o:cisco:ios_xe:16.10.1g:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.10.1s:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.10.2:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.10.3:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.11.1:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.11.1a:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.11.1b:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.11.1c:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.11.1s:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.11.2:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.12.1:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.12.1a:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.12.1c:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.12.1s:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.12.1t:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.12.1w:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.12.1x:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.12.1y:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.12.1z:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.12.1z1:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.12.1za:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.12.2:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.12.2a:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.12.2s:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.12.2t:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.12.3:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.12.3a:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.12.3s:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.12.4:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.12.4a:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.12.5:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.12.5a:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.12.5b:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:17.1.1:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:17.1.1a:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:17.1.1s:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:17.1.1t:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:17.1.2:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:17.1.3:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:17.2.1:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:17.2.1a:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:17.2.1r:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:17.2.1v:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan:*:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.10.1_when_installed_on_1000_series_integrated_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.10.1_when_installed_on_4000_series_integrated_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.10.1_when_installed_on_asr_1000_series_aggregation_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.10.1_when_installed_on_integrated_services_virtual:router:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.10.2_when_installed_on_1000_series_integrated_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.10.2_when_installed_on_4000_series_integrated_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.10.2_when_installed_on_asr_1000_series_aggregation_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.10.2_when_installed_on_integrated_services_virtual:router:*:*:*:*:*:*:* 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*cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.1b_when_installed_on_1000_series_integrated_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.1b_when_installed_on_1100_series_industrial_integrated_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.1b_when_installed_on_4000_series_integrated_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.1b_when_installed_on_asr_1000_series_aggregation_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.1b_when_installed_on_cloud_services_router_1000v:series:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.1b_when_installed_on_integrated_services_virtual:router:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.1c_when_installed_on_1000_series_integrated_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.1c_when_installed_on_1100_series_industrial_integrated_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.1c_when_installed_on_4000_series_integrated_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.1c_when_installed_on_asr_1000_series_aggregation_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.1c_when_installed_on_cloud_services_router_1000v:series:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.1c_when_installed_on_integrated_services_virtual:router:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.1d_when_installed_on_1000_series_integrated_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.1d_when_installed_on_1100_series_industrial_integrated_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.1d_when_installed_on_4000_series_integrated_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.1d_when_installed_on_asr_1000_series_aggregation_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.1d_when_installed_on_cloud_services_router_1000v:series:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.1d_when_installed_on_integrated_services_virtual:router:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.1e_when_installed_on_1000_series_integrated_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.1e_when_installed_on_1100_series_industrial_integrated_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.1e_when_installed_on_4000_series_integrated_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.1e_when_installed_on_asr_1000_series_aggregation_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.1e_when_installed_on_cloud_services_router_1000v:series:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.1e_when_installed_on_integrated_services_virtual:router:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.2r_when_installed_on_1000_series_integrated_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.2r_when_installed_on_1100_series_industrial_integrated_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.2r_when_installed_on_4000_series_integrated_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.2r_when_installed_on_asr_1000_series_aggregation_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.2r_when_installed_on_cloud_services_router_1000v:series:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.2r_when_installed_on_integrated_services_virtual:router:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.3_when_installed_on_1000_series_integrated_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.3_when_installed_on_1100_series_industrial_integrated_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.3_when_installed_on_4000_series_integrated_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.3_when_installed_on_asr_1000_series_aggregation_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.3_when_installed_on_cloud_services_router_1000v:series:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.3_when_installed_on_integrated_services_virtual:router:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.4_when_installed_on_1000_series_integrated_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.4_when_installed_on_1100_series_industrial_integrated_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.4_when_installed_on_4000_series_integrated_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.4_when_installed_on_asr_1000_series_aggregation_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.4_when_installed_on_cloud_services_router_1000v:series:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.4_when_installed_on_integrated_services_virtual:router:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.4a_when_installed_on_4000_series_integrated_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.4a_when_installed_on_cloud_services_router_1000v:series:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.4a_when_installed_on_integrated_services_virtual:router:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.5_when_installed_on_1000_series_integrated_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.5_when_installed_on_1100_series_industrial_integrated_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.5_when_installed_on_4000_series_integrated_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.5_when_installed_on_asr_1000_series_aggregation_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.5_when_installed_on_cloud_services_router_1000v:series:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.12.5_when_installed_on_integrated_services_virtual:router:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.9.1_when_installed_on_1000_series_integrated_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.9.1_when_installed_on_4000_series_integrated_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.9.1_when_installed_on_asr_1000_series_aggregation_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.9.1_when_installed_on_integrated_services_virtual:router:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.9.2_when_installed_on_1000_series_integrated_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.9.2_when_installed_on_4000_series_integrated_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.9.2_when_installed_on_asr_1000_series_aggregation_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.9.2_when_installed_on_integrated_services_virtual:router:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.9.3_when_installed_on_1000_series_integrated_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.9.3_when_installed_on_4000_series_integrated_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.9.3_when_installed_on_asr_1000_series_aggregation_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.9.3_when_installed_on_integrated_services_virtual:router:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.9.4_when_installed_on_1000_series_integrated_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.9.4_when_installed_on_4000_series_integrated_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.9.4_when_installed_on_asr_1000_series_aggregation_services:routers:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe_sd-wan_16.9.4_when_installed_on_integrated_services_virtual:router:*:*:*:*:*:*:*
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-2021-1619 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-2021-1619
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.26 }} 0.03%
score
0.66115
percentile
CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability