Improper input validation in Cisco iOS Xe Software
CVE-2023-20072
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 affected system. A successful exploit could allow the attacker to cause the affected system to reload, resulting in a DoS condition. Note: Only traffic directed to the affected system can be used to exploit this vulnerability.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.010 (58.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.
Affected products
- Cisco Ios Xe Software — versions n/a
- Cisco Ios_xe — versions 17.9.1, 17.9.1a, 17.9.1w
Weakness classification (CWE)
References
- psirt@cisco.com (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2023-20072?
- CVE-2023-20072 is a high-severity vulnerability in Cisco iOS Xe Software, classified under Improper Input Validation. CVSS score: 8.6/10. Published 2023-03-23.
- How severe is CVE-2023-20072?
- High severity. CVSS v3 base score is 8.6 out of 10.