CVE-2021-1611 — Uncontrolled Resource Consumption in Cisco IOS XE

CWE-399CWE-400 — Uncontrolled Resource Consumption4 documents4 sources
Severity
8.6HIGHNVD
EPSS
0.5%
top 34.37%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Cisco IOS XECisco IOS XE Software
Timeline
PublishedSep 23
Latest updateMay 24

Description

A vulnerability in Ethernet over GRE (EoGRE) packet processing of Cisco IOS XE Wireless Controller Software for the Cisco Catalyst 9800 Family Wireless Controller, Embedded Wireless Controller, and Embedded Wireless on Catalyst 9000 Series Switches could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper processing of malformed EoGRE packets. An attacker could exploit this vulnerability by sending ma…

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_xe< 17.3.1

Patches

Patch: tools.cisco.com ↗Patch: tools.cisco.com ↗

🔴Vulnerability Details

2
GHSA
GHSA-4xpj-f87g-q66q: A vulnerability in Ethernet over GRE (EoGRE) packet processing of Cisco IOS XE Wireless Controller Software for the Cisco Catalyst 9800 Family Wireles↗2022-05-24
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CVEList
Cisco IOS XE Software for Catalyst 9800 Series Wireless Controllers EoGRE Denial of Service Vulnerability↗2021-09-23
▶

📋Vendor Advisories

1
Cisco
Cisco IOS XE Software for Catalyst 9800 Series Wireless Controllers EoGRE Denial of Service Vulnerability↗2021-09-22
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CVE-2021-1611 — Uncontrolled Resource Consumption | cvebase