Detections
Analytics
Cisco IOS XR Software SNMP Management Plane Protection ACL Bypass (cisco-sa-snmp-7MKrW7Nq)
high Nessus Plugin ID 148320
Language:
Synopsis
The remote device is missing a vendor-supplied security patchDescription
According to its self-reported version, IOS-XR is affected by a security bypass vulnerability due to incorrect LPTS programming when using SNMP with management plane protection. An unauthenticated, remote attacker can exploit this, by connecting to an affected device with SNMP, to connect to the device on the configured SNMP ports despite having a configuration to deny SNMP access. Valid credentials are required to execute any of the SNMP requests.Please see the included Cisco BIDs and Cisco Security Advisory for more information.
Solution
Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvt93184See Also
Plugin Details
Severity: High
ID: 148320
File Name: cisco-sa-snmp-7MKrW7Nq-iosxr.nasl
Version: 1.7
Type: combined
Family: CISCO
Published: 4/6/2021
Updated: 4/8/2021
Configuration: Enable paranoid mode
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Low
Score: 3.6
CVSS v2
Risk Factor: Medium
Base Score: 5
Temporal Score: 3.7
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N
CVSS Score Source: CVE-2021-1243
CVSS v3
Risk Factor: High
Base Score: 7.5
Temporal Score: 6.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:cisco:ios_xr
Required KB Items: Settings/ParanoidReport, Host/Cisco/IOS-XR/Version
Exploit Ease: No known exploits are available
Patch Publication Date: 2/3/2021
Vulnerability Publication Date: 2/3/2021
Reference Information
CVE: CVE-2021-1243