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Cisco IOS Software Intermediate System to Intermediate System DoS (cisco-sa-isis-sGjyOUHX)

high Nessus Plugin ID 216409

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Synopsis

The remote device is missing a vendor-supplied security patch

Description

According to its self-reported version, Cisco IOS is affected by a vulnerability.

 - A vulnerability in the Intermediate System-to-Intermediate System (IS-IS) protocol of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient input validation when parsing an ingress IS-IS packet. An attacker could exploit this vulnerability by sending a crafted IS-IS packet to an affected device after forming an adjacency. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition. Note: The IS-IS protocol is a routing protocol. To exploit this vulnerability, an attacker must be Layer 2-adjacent to the affected device and have formed an adjacency. (CVE-2024-20312)

Please see the included Cisco BIDs and Cisco Security Advisory for more information.

Solution

Upgrade to the relevant fixed version referenced in Cisco bug ID CSCwf54007

See Also

http://www.nessus.org/u?37a0c9f9

http://www.nessus.org/u?a1da659d

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwf54007

Plugin Details

Severity: High

ID: 216409

File Name: cisco-sa-isis-sGjyOUHX-ios.nasl

Version: 1.1

Type: combined

Family: CISCO

Published: 2/18/2025

Updated: 2/18/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 4.5

Vector: CVSS2#AV:A/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2024-20312

CVSS v3

Risk Factor: High

Base Score: 7.4

Temporal Score: 6.4

Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:cisco:ios

Required KB Items: Host/Cisco/IOS/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 3/27/2024

Vulnerability Publication Date: 3/27/2024

Reference Information

CVE: CVE-2024-20312

CWE: 476

CISCO-SA: cisco-sa-isis-sGjyOUHX

IAVA: 2024-A-0188-S

CISCO-BUG-ID: CSCwf54007