Detections
Analytics

Cisco IOS Tcl DoS (cisco-sa-tcl-dos-MAZQUnMF)

medium Nessus Plugin ID 137407

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Synopsis

The remote device is missing a vendor-supplied security patch

Description

According to its self-reported version, IOS is affected by a vulnerability in the Tool Command Line (Tcl) interpreter due to insufficient input validation of data passed to the Tcl interpreter. An authenticated, unprivileged, and local attacker can exploit this, by executing crafted Tcl arguments on an affected device, in order to cause a denial of service (DoS) condition on an affected system.

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 CSCvq28110

See Also

http://www.nessus.org/u?2ba71b51

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvq28110

Plugin Details

Severity: Medium

ID: 137407

File Name: cisco-sa-tcl-dos-MAZQUnMF-ios.nasl

Version: 1.14

Type: combined

Family: CISCO

Published: 6/17/2020

Updated: 6/3/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4.9

Temporal Score: 3.6

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

CVSS Score Source: CVE-2020-3201

CVSS v3

Risk Factor: Medium

Base Score: 6

Temporal Score: 5.2

Vector: CVSS:3.0/AV:L/AC:L/PR:H/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: 6/3/2020

Vulnerability Publication Date: 6/3/2020

Reference Information

CVE: CVE-2020-3201

CWE: 20

CISCO-SA: cisco-sa-tcl-dos-MAZQUnMF

IAVA: 2020-A-0239-S

CISCO-BUG-ID: CSCvq28110