CVE-2023-20072 — Improper Input Validation in Cisco IOS XE Software

CWE-20 — Improper Input Validation4 documents4 sources

Severity

8.6HIGHNVD

EPSS

1.4%

top 19.58%

CISA KEV

Not in KEV

Exploit

No known exploits

Affected products

Cisco IOS XE Software Cisco IOS XE

Timeline

PublishedMar 23

Description

A vulnerability in the fragmentation handling code of tunnel protocol packets in Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected system to reload, resulting in a denial of service (DoS) condition. This vulnerability is due to the improper handling of large fragmented tunnel protocol packets. One example of a tunnel protocol is Generic Routing Encapsulation (GRE). An attacker could exploit this vulnerability by sending crafted fragmented packets to an af…

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

▶CVEListV5cisco/cisco_ios_xe_softwaren/a

▶NVDcisco/ios_xe17.9.1, 17.9.1a, 17.9.1w+2

🔴Vulnerability Details

GHSA

GHSA-57j4-jv54-9h84: A vulnerability in the fragmentation handling code of tunnel protocol packets in Cisco IOS XE Software could allow an unauthenticated, remote attacker↗2023-03-23

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CVEList

Cisco IOS XE Software Fragmented Tunnel Protocol Packet Denial of Service Vulnerability↗2023-03-23

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📋Vendor Advisories

Cisco

Cisco IOS XE Software Fragmented Tunnel Protocol Packet Denial of Service Vulnerability↗2023-03-22

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