PT-2021-5154 · Cisco · Cisco Sd-Wan

James Spadaro · Published 2021-09-22 · Updated 2022-10-24 · CVE-2021-34726

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 SD-WAN Software (affected versions not specified)

Description A vulnerability in the CLI of Cisco SD-WAN Software could allow an authenticated, local attacker to inject arbitrary commands to be executed with root-level privileges on the underlying operating system of an affected device. This vulnerability is due to insufficient input validation on certain CLI commands. An attacker could exploit this vulnerability by authenticating to an affected device and submitting crafted input to the CLI. The attacker must be authenticated as an administrative user to execute the affected commands. A successful exploit could allow the attacker to execute commands with root-level privileges.

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

OS Command Injection

Command Injection

Weakness Enumeration

CWE-78

CWE-77

Related Identifiers

BDU:2021-05950

CVE-2021-34726

Affected Products

Cisco Sd-Wan

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2021-34726 · Security Note
• https://bdu.fstec.ru/vul/2021-05950 · Security Note
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-maapi-cmdinjec-znUYTuC · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-34726 · Vendor Advisory
• https://t.me/cibsecurity/29269 · Telegram Post
• https://t.me/cvenotify/21324 · Telegram Post