Cisco IOS Short Message Service Denial of Service Vulnerability

high Nessus Plugin ID 128113

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Synopsis

The remote device is missing a vendor-supplied security patch

Description

According to its self-reported version, the installed Cisco IOS Software is affected by a vulnerability in its implementation of the Short Message Service (SMS) handling functionality. This allows an unauthenticated, remote attacker to trigger a denial of service (DoS) condition on an affected device. The vulnerability is due to improper processing of SMS protocol data units (PDUs) that are encoded with a special character set. An attacker can exploit this vulnerability by sending a malicious SMS message to an affected device. A successful exploit allows the attacker to cause the wireless WAN (WWAN) cellular interface module on an affected device to crash, resulting in a DoS condition that would require manual intervention to restore normal operating conditions.

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 CSCvm07801

Plugin Details

Severity: High

ID: 128113

File Name: cisco-sa-20190327-sms-dos-ios.nasl

Version: 1.9

Type: combined

Family: CISCO

Published: 8/23/2019

Updated: 1/14/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2019-1747

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

Required KB Items: Host/Cisco/IOS/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 3/27/2019

Vulnerability Publication Date: 3/27/2019

Reference Information

CVE: CVE-2019-1747

BID: 107599

CWE: 20

CISCO-SA: cisco-sa-20190327-sms-dos

CISCO-BUG-ID: CSCvm07801

Detections

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