EN

CVE-2024-20311

High
8.6
0.05.010.0
Year
2024
Published
Mar 27, 2024
Known Affected Devices
0
CVSS Score
8.6

What is 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.

CVSS Vector Breakdown

CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
AV
Attack Vector
Network

Exploitable remotely over the network without requiring access to the local system.

AC
Attack Complexity
Low

No special conditions required. Exploit can be performed reliably and repeatedly.

PR
Privileges Required
None

No authentication required. Any anonymous user can exploit this vulnerability.

UI
User Interaction
None

No user interaction required. Exploit runs without any victim action.

S
Scope
Changed

Exploiting the vulnerability can affect other components beyond the vulnerable one.

C
Confidentiality Impact
None

No confidentiality impact. Sensitive data is not exposed.

I
Integrity Impact
None

No integrity impact. Data cannot be modified.

A
Availability Impact
High

Complete denial of service. The component becomes fully unavailable.

Known Affected Devices

Cisco Cisco ISR 4461 Cisco Cisco ISR 927 Cisco Cisco ASR 1001-HX Cisco Cisco ASR 1002-HX Cisco Cisco ASR 1009-X Cisco Cisco ASR 9001 Cisco Cisco Catalyst 2960X-48FPS-L Cisco Cisco Catalyst 3650-24TS-L Cisco Cisco Catalyst 3650-48TS-L Cisco Cisco Catalyst 9200-24P Cisco Cisco Catalyst 9300-48U Cisco Cisco Catalyst 9300-48UXM Cisco Cisco Catalyst 9300L-24T-4G Cisco Cisco Catalyst 9407R Cisco Cisco Catalyst 9500-24Q Cisco Cisco Catalyst 9500-24Y4C Cisco Cisco Nexus 7018 Cisco Cisco Nexus 9364C Cisco Cisco ASA 5508-X Cisco Cisco ASA 5515-X Cisco Cisco Firepower 4140 Cisco Cisco Firepower 4150 Cisco Cisco Catalyst 9115AXE Cisco Cisco Catalyst 9120AXE Cisco Cisco Catalyst 9800-40

FAQ

How severe is CVE-2024-20311?

CVE-2024-20311 has a CVSS score of 8.6/10, rated as High. This is a high severity vulnerability and should be patched as soon as possible.

What does the CVSS score mean for CVE-2024-20311?

CVSS (Common Vulnerability Scoring System) rates vulnerability severity from 0.0 to 10.0. CVE-2024-20311 scores 8.6/10 (High). Scores 9.0–10.0 are Critical, 7.0–8.9 are High, 4.0–6.9 are Medium, and below 4.0 are Low.

Which devices are affected by CVE-2024-20311?

The list of devices confirmed to be affected by CVE-2024-20311 is shown in the "Affected Devices" section above. Check your firmware version against the vendor security advisory and apply the latest patch.

How do I fix or mitigate CVE-2024-20311?

Apply the latest firmware or software update from the vendor. Check the References section above for official advisories and patch notes. If no patch is available, consider disabling the affected feature or isolating the device from untrusted networks.