Detections
Analytics
Cisco IOS XE Software for Catalyst 9200 Series Switches Umbrella Connector DoS (cisco-sa-iosxe-umbrella-dos-t2QMUX37)
high Nessus Plugin ID 141398
Language:
Synopsis
The remote device is missing a vendor-supplied security patchDescription
According to its self-reported version, IOS-XE is affected by a DoS vulnerability in the Umbrella Connector component of Cisco IOS XE Software for Cisco Catalyst 9200 Series Switches due to insufficient error handling when parsing DNS requests. An unauthenticated, remote attacker could exploit this vulnerability by sending a series of malicious DNS requests to an Umbrella Connector client interface of an affected device. A successful exploit could allow the attacker to cause a crash of the iosd process, which triggers a reload of the affected device and a DOS condition.Please see the included Cisco BID and Cisco Security Advisory for more information.
Solution
Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvr57231See Also
http://www.nessus.org/u?06b0d48f
http://tools.cisco.com/security/center/viewErp.x?alertId=ERP-74268
Plugin Details
Severity: High
ID: 141398
File Name: cisco-sa-iosxe-umbrella-dos-t2QMUX37-iosxe.nasl
Version: 1.10
Type: local
Family: CISCO
Published: 10/13/2020
Updated: 9/28/2023
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.4
CVSS v2
Risk Factor: High
Base Score: 7.1
Temporal Score: 5.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:C
CVSS Score Source: CVE-2020-3510
CVSS v3
Risk Factor: High
Base Score: 8.6
Temporal Score: 7.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/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: Host/Cisco/IOS-XE/Version, Host/Cisco/IOS-XE/Model
Exploit Ease: No known exploits are available
Patch Publication Date: 9/24/2020
Vulnerability Publication Date: 9/24/2020
Reference Information
CVE: CVE-2020-3510