Vulnerability in Cisco iOS Xe Software
CVE-2024-20311
A vulnerability in the Locator ID Separation Protocol (LISP) feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. This vulnerability is due to the incorrect handling of LISP packets. An attacker could exploit this vulnerability by sending a crafted LISP packet to an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a denial of service (DoS) condition. Note: This vulnerability could be exploited over either IPv4 or IPv6 transport.
EPSS: 0.008 (53.0th 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 3.7.0S, 3.7.1S, 3.7.2S
- Cisco Ios — versions 15.6\(2\)sp7, 15.6(2)S1, 15.9(3)M3b
- Cisco Ios_xe — versions 3.7.0bs, 3.7.0s, 3.7.1as
Weakness classification (CWE)
Public proof-of-concept exploits
References
- psirt@cisco.com (Vendor Advisory)
Frequently asked questions
- What is CVE-2024-20311?
- CVE-2024-20311 is a high-severity vulnerability in Cisco iOS Xe Software, classified under Uncontrolled Recursion. CVSS score: 8.6/10. Published 2024-03-27.
- How severe is CVE-2024-20311?
- High severity. CVSS v3 base score is 8.6 out of 10.
- Is CVE-2024-20311 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.