PT-2021-2578 · Cisco · Cisco Ios Xe Sd-Wan+1

Andrew Kim · Published 2021-03-24 · Updated 2021-03-29 · CVE-2021-1432

Positive Technologies (AI Summary)

CVSS v3.1

7.3

High

Base vector

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

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

Description A vulnerability in the CLI of Cisco IOS XE SD-WAN Software could allow an authenticated, local attacker to execute arbitrary commands on the underlying operating system as the root user. The attacker must be authenticated on the affected device as a low-privileged user to exploit this vulnerability. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by injecting arbitrary commands to a file as a lower-privileged user. The commands are then executed on the device by the root user. A successful exploit could allow the attacker to execute arbitrary commands as the root user.

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

RCE

Special Elements Injection

Weakness Enumeration

CWE-20

CWE-74

Related Identifiers

BDU:2021-02043

CVE-2021-1432

Affected Products

Cisco Ios Xe Sd-Wan

Cisco Ios Xe

References · 5

• https://osv.dev/vulnerability/CVE-2021-1432 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-1432 · Security Note
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-sdwarbcmdexec-sspOMUr3 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-02043 · Security Note
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-sdwarbcmdexec-sspOMUr3 · Vendor Advisory