Cisco IOS XE Software Zone-Based Firewall IP Fragmentation DoS (cisco-sa-20180328-fwip)

high Nessus Plugin ID 131130

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Synopsis

The remote device is missing a vendor-supplied security patch

Description

According to its self-reported version, Cisco IOS XE Software is affected by a vulnerability in the Zone-Based Firewall due to the way fragmented packets in the firewall code. An unauthenticated, remote attacker can exploit this by sending fragmented IP Version 4 or IP Version 6 packets through an affected device, causing the device to crash.

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

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvf60296

Plugin Details

Severity: High

ID: 131130

File Name: cisco-sa-20180328-fwip.nasl

Version: 1.7

Type: combined

Family: CISCO

Published: 11/20/2019

Updated: 5/3/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2018-0157

CVSS v3

Risk Factor: High

Base Score: 8.6

Temporal Score: 7.5

Vector: CVSS:3.0/AV:N/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_xe

Required KB Items: Host/Cisco/IOS-XE/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 3/28/2019

Vulnerability Publication Date: 3/28/2019

Reference Information

CVE: CVE-2018-0157

BID: 103561

CISCO-SA: cisco-sa-20180328-fwip

CISCO-BUG-ID: CSCvf60296

Detections

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