PT-2021-4029 · Sonicwall · Sonicwall Nsm On-Prem

Nikita Abramov · Published 2021-05-27 · Updated 2021-06-08 · CVE-2021-20026

Positive Technologies (AI Summary)

CVSS v2.0

9.0

High

Base vector

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

Name of the Vulnerable Software and Affected Versions SonicWall NSM On-Prem versions 2.2.0-R10 and earlier

Description A vulnerability in the SonicWall NSM On-Prem product allows an authenticated attacker to perform OS command injection using a crafted HTTP request. The issue is related to the failure to neutralize special elements used in an OS command. This could allow a remote attacker to execute arbitrary commands using specially crafted HTTP requests.

Recommendations For versions 2.2.0-R10 and earlier, update to a version later than 2.2.0-R10 to resolve the issue. As a temporary workaround, consider restricting access to the HTTP request functionality to minimize the risk of exploitation.

Fix

OS Command Injection

Weakness Enumeration

CWE-78

Related Identifiers

BDU:2021-04556

CVE-2021-20026

Affected Products

Sonicwall Nsm On-Prem

References · 5

• https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0014 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-20026 · Security Note
• https://bdu.fstec.ru/vul/2021-04556 · Security Note
• https://osv.dev/vulnerability/CVE-2021-20026 · Vendor Advisory
• https://xakep.ru/2021/07/02/sonicwall-nsm-bug · Note