PT-2021-1976 · Cisco · Cisco Small Business Rv042G+5

Kai Cheng · Published 2021-02-03 · Updated 2022-08-05 · CVE-2021-1318

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: Cisco Small Business RV016, RV042, RV042G, RV082, RV320, and RV325 Routers (affected versions not specified)

Description: The issue is related to insufficient validation of user-supplied input in the web-based management interface, which could allow an authenticated, remote attacker to inject arbitrary commands with root privileges. An attacker could exploit this by sending crafted HTTP requests to a targeted device, potentially allowing the execution of arbitrary code as the root user on the underlying operating system. The attacker would need valid administrator credentials on an affected device to exploit this issue.

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

RCE

OS Command Injection

Weakness Enumeration

CWE-20

CWE-78

Related Identifiers

BDU:2021-00797

CVE-2021-1318

Affected Products

Cisco Small Business Rv016

Cisco Small Business Rv042

Cisco Small Business Rv042G

Cisco Small Business Rv082

Cisco Small Business Rv320

Cisco Small Business Rv325

References · 6

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rv-command-inject-BY4c5zd · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-1318 · Security Note
• https://osv.dev/vulnerability/CVE-2021-1318 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-00797 · Security Note
• https://t.me/cibsecurity/23105 · Telegram Post
• https://t.me/cvenotify/9592 · Telegram Post