Cisco IOS and IOS XE Software Tcl Arbitrary Code Execution (cisco-sa-tcl-ace-C9KuVKmm)

medium Nessus Plugin ID 137630

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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 Arbitrary Code Execution vulnerability. An authenticated, local attacker with privileged EXEC credentials to execute arbitrary code on the underlying operating system (OS) with root privileges. The vulnerability is due to insufficient input validation of data passed to the Tcl interpreter. A successful exploit could allow the attacker to cause memory corruption or execute the code with root privileges on the underlying OS of the affected device.

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 CSCvq05584

Plugin Details

Severity: Medium

ID: 137630

File Name: cisco-sa-tcl-ace-C9KuVKmm-ios.nasl

Version: 1.18

Type: combined

Family: CISCO

Published: 6/18/2020

Updated: 6/3/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

CVSS Score Source: CVE-2020-3204

CVSS v3

Risk Factor: Medium

Base Score: 6.7

Temporal Score: 5.8

Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/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-2020-3204

CWE: 20

CISCO-SA: cisco-sa-tcl-ace-C9KuVKmm

IAVA: 2020-A-0239-S

CISCO-BUG-ID: CSCvq05584

Detections

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