PT-2020-2871 · Cisco+1 · Cisco Ios Xe+2

Published 2020-06-03 · Updated 2021-09-17 · CVE-2020-3204

Positive Technologies (AI Summary)

CVSS v2.0

7.2

High

Base vector

AV:L/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Cisco IOS Software and Cisco IOS XE Software (affected versions not specified)

Description A vulnerability in the Tool Command Language (Tcl) interpreter could allow 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. An attacker could exploit this vulnerability by loading malicious Tcl code on an affected device. 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.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2020-03028

CVE-2020-3204

Affected Products

Cisco Ios

Cisco Ios Xe

Tcl

References · 5

• https://osv.dev/vulnerability/CVE-2020-3204 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-3204 · Security Note
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-tcl-ace-C9KuVKmm · Vendor Advisory
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-tcl-ace-C9KuVKmm · Vendor Advisory
• https://bdu.fstec.ru/vul/2020-03028 · Security Note