Detections
Analytics
Cisco IOS XE Software for cBR 8 Converged Broadband Routers Simple Network Management Protocol DoS (cisco-sa-cbr8snmp-zGjkZ9Fc)
high Nessus Plugin ID 165349
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Synopsis
The remote device is missing a vendor-supplied security patchDescription
A vulnerability in the Simple Network Management Protocol (SNMP) punt handling function of Cisco cBR-8 Converged Broadband Routers could allow an authenticated, remote attacker to overload a device punt path, resulting in a denial of service (DoS) condition. This vulnerability is due to the punt path being overwhelmed by large quantities of SNMP requests. An attacker could exploit this vulnerability by sending a large number of SNMP requests to an affected device. A successful exploit could allow the attacker to overload the device punt path, resulting in a DoS condition.Please see the included Cisco BID and Cisco Security Advisory for more information.
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
Solution
Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvw60229See Also
Plugin Details
Severity: High
ID: 165349
File Name: cisco-sa-cbr8snmp-zGjkZ9Fc-iosxe.nasl
Version: 1.3
Type: combined
Family: CISCO
Published: 9/23/2022
Updated: 3/23/2023
Configuration: Enable paranoid mode
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.4
CVSS v2
Risk Factor: Medium
Base Score: 4
Temporal Score: 3
Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:N/A:P
CVSS Score Source: CVE-2021-1623
CVSS v3
Risk Factor: High
Base Score: 7.7
Temporal Score: 6.7
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:cisco:ios_xe
Required KB Items: Settings/ParanoidReport, Host/Cisco/IOS-XE/Version
Exploit Ease: No known exploits are available
Patch Publication Date: 9/22/2021
Vulnerability Publication Date: 9/22/2021
Reference Information
CVE: CVE-2021-1623