CVE-2020-3510 — Uncontrolled Resource Consumption in Cisco IOS XE Software

CWE-388CWE-400 — Uncontrolled Resource Consumption4 documents4 sources
Severity
8.6HIGHNVD
EPSS
0.8%
top 26.73%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Cisco IOS XE SoftwareCisco IOS XE
Timeline
PublishedSep 24
Latest updateMay 24

Description

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 success…

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:HExploitability: 3.9 | Impact: 4.0

Affected Packages2 packages

▶NVDcisco/ios_xe16.12.1, 16.12.2, 17.1.1+2

🔴Vulnerability Details

2
GHSA
GHSA-9f77-7fxg-mppm: A vulnerability in the Umbrella Connector component of Cisco IOS XE Software for Cisco Catalyst 9200 Series Switches could allow an unauthenticated, r↗2022-05-24
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CVEList
Cisco IOS XE Software for Catalyst 9200 Series Switches Umbrella Connector Denial of Service Vulnerability↗2020-09-24
▶

📋Vendor Advisories

1
Cisco
Cisco IOS XE Software for Catalyst 9200 Series Switches Umbrella Connector Denial of Service Vulnerability↗2020-09-24
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CVE-2020-3510 — Uncontrolled Resource Consumption | cvebase