Cisco XE: CVE-2024-20436: Cisco IOS XE Software HTTP Server Telephony Services Denial of Service Vulnerability

Cisco XE: CVE-2024-20436: Cisco IOS XE Software HTTP Server Telephony Services Denial of Service Vulnerability

Severity

8

CVSS

(AV:N/AC:L/Au:N/C:N/I:N/A:C)

Published

09/25/2024

Created

09/27/2024

Added

09/26/2024

Modified

02/11/2025

Description

A vulnerability in the HTTP Server feature of Cisco IOS XE Software when the Telephony Service feature is enabled could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to a null pointer dereference when accessing specific URLs. An attacker could exploit this vulnerability by sending crafted HTTP traffic to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, causing a DoS condition on the affected device.

Solution(s)

• cisco-xe-update-latest

References

• https://attackerkb.com/topics/cve-2024-20436
• CVE - 2024-20436
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-httpsrvr-dos-yOZThut
• cisco-sa-httpsrvr-dos-yOZThut