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Vulnerability Details : CVE-2021-1243

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.
Publish Date : 2021-02-04 Last Update Date : 2021-02-08
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- CVSS Scores & Vulnerability Types

CVSS Score
5.0
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact None (There is no impact to the availability of the system.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s)
CWE ID 284

- Products Affected By CVE-2021-1243

# Product Type Vendor Product Version Update Edition Language
1 OS Cisco Ios Xr * * * * Version Details Vulnerabilities
2 OS Cisco Ios Xr 6.7.1 * * * Version Details Vulnerabilities
3 OS Cisco Ios Xr 7.0.11 * * * Version Details Vulnerabilities
4 OS Cisco Ios Xr 7.1.0 * * * Version Details Vulnerabilities
5 OS Cisco Ios Xr 7.2.0 * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Cisco Ios Xr 5

- References For CVE-2021-1243

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snmp-7MKrW7Nq
CISCO 20210203 Cisco IOS XR Software SNMP Management Plane Protection ACL Bypass Vulnerability

- Metasploit Modules Related To CVE-2021-1243

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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