CVE-2020-3510

EPSS 0.75%
Published 24.09.2020 18:15:21
Last modified 21.11.2024 05:31:13
Source psirt@cisco.com
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A vulnerability in the Umbrella Connector component of Cisco IOS XE Software for Cisco Catalyst 9200 Series Switches could allow an unauthenticated, remote attacker to trigger a reload, resulting in a denial of service condition on an affected device. The vulnerability is due to insufficient error handling when parsing DNS requests. An 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.

Affected products Warnungen 0 Metrics 4 CWE 1 References 4

Data is provided by the National Vulnerability Database (NVD)

Cisco ≫ Ios Xe Version16.12.1

Cisco ≫ Ios Xe Version16.12.2

Cisco ≫ Ios Xe Version17.1.1

Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.

EPSS Metriken
Type	Source	Score	Percentile
EPSS	FIRST.org	0.75%	0.709

CVSS Metriken
Source	Base Score	Exploit Score	Impact Score	Vector string
nvd@nist.gov	8.6	3.9	4	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
nvd@nist.gov	7.1	8.6	6.9	AV:N/AC:M/Au:N/C:N/I:N/A:C
psirt@cisco.com	8.6	3.9	4	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

CWE-400 Uncontrolled Resource Consumption

The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-umbrella-dos-t2QMUX37

Vendor Advisory

https://nvd.nist.gov/vuln/detail/CVE-2020-3510

CVE Source (NVD)

https://cveawg.mitre.org/api/cve/CVE-2020-3510

CVE Source (JSON)

https://euvd.enisa.europa.eu/vulnerability/CVE-2020-3510

EUVD