Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2024-20436

Severity CVSS v4.0:
Pending analysis
Type:
CWE-476 NULL Pointer Dereference
Publication date:
25/09/2024
Last modified:
08/10/2024

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.<br /> <br /> 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.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
7.50
Severity 3.x
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:cisco:ios_xe:3.9.0as:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.9.1s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.9.2s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.10.0s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.10.1s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.10.2s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.10.2ts:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.10.3s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.10.4s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.10.5s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.10.6s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.10.7s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.10.8as:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.10.8s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.10.9s:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools