PT-2020-4427 · Cisco · Cisco Ios Xe

Jg · Published 2020-09-24 · Updated 2022-10-27 · CVE-2020-3403

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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

Description: The issue is related to insufficient protection of values passed to a script that executes during device startup, allowing an authenticated, local attacker with privileged EXEC permissions to inject a command to the underlying operating system. This command will execute with root privileges upon the next reboot of the device. An attacker could exploit this by writing values to a specific file, potentially allowing them to execute commands with root privileges each time the affected device is restarted.

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

OS Command Injection

Weakness Enumeration

CWE-78

Related Identifiers

BDU:2020-04956

CVE-2020-3403

Affected Products

Cisco Ios Xe

References · 5

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-cmdinj-2MzhjM6K · Vendor Advisory
• https://bdu.fstec.ru/vul/2020-04956 · Security Note
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-cmdinj-2MzhjM6K · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-3403 · Security Note
• https://osv.dev/vulnerability/CVE-2020-3403 · Vendor Advisory