CVE-2021-1243
"Cisco SNMP Management Plane Protection LPTS Configuration Vulnerability (Denial of Configuration)"
Description
A vulnerability in the Local Packet Transport Services (LPTS) programming of the SNMP with the management plane protection feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to allow connections despite the management plane protection that is configured to deny access to the SNMP server of an affected device. This vulnerability is due to incorrect LPTS programming when using SNMP with management plane protection. An attacker could exploit this vulnerability by connecting to an affected device using SNMP. A successful exploit could allow the attacker to connect to the device on the configured SNMP ports. Valid credentials are required to execute any of the SNMP requests.
INFO
Published Date :
Feb. 4, 2021, 5:15 p.m.
Last Modified :
Nov. 7, 2023, 3:27 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
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-2021-1243.
| URL | Resource |
|---|---|
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snmp-7MKrW7Nq | 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-2021-1243 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-1243 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:L/I:N/A:N Added CVSS V3.1 Cisco Systems, Inc. AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N -
Reanalysis by [email protected]
Sep. 20, 2022
Action Type Old Value New Value Added CWE NIST NVD-CWE-Other -
Initial Analysis by [email protected]
Feb. 08, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:P/A:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Changed Reference Type https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snmp-7MKrW7Nq No Types Assigned https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snmp-7MKrW7Nq Vendor Advisory Added CPE Configuration OR *cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:* versions from (excluding) 6.1.1 up to (excluding) 6.6.4 *cpe:2.3:o:cisco:ios_xr:6.7.1:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:* versions from (including) 7.0.0 up to (excluding) 7.0.2 *cpe:2.3:o:cisco:ios_xr:7.0.11:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xr:7.1.0:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xr:7.2.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Feb. 04, 2021
Action Type Old Value New Value Changed Description A vulnerability in the Local Packet Transport Services (LPTS) programming of the SNMP with the management plane protection feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to allow connections despite the management plane protection that is configured to deny access to the SNMP server of an affected device. This vulnerability is due to incorrect LPTS programming when using SNMP with management plane protection. An attacker could exploit this vulnerability by connecting to an affected device using SNMP. A successful exploit could allow the attacker to connect to the device on the configured SNMP ports. Valid credentials are required to execute any of the SNMP requests. A vulnerability in the Local Packet Transport Services (LPTS) programming of the SNMP with the management plane protection feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to allow connections despite the management plane protection that is configured to deny access to the SNMP server of an affected device. This vulnerability is due to incorrect LPTS programming when using SNMP with management plane protection. An attacker could exploit this vulnerability by connecting to an affected device using SNMP. A successful exploit could allow the attacker to connect to the device on the configured SNMP ports. Valid credentials are required to execute any of the SNMP requests.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-1243 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-2021-1243
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.15 }} 0.00%
score
0.49651
percentile