PT-2020-1730 · Cisco · Cisco Small Business Switches

Published 2020-01-29 · Updated 2020-02-19 · CVE-2020-3147

Positive Technologies (AI Summary)

CVSS v3.1

8.6

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Cisco Small Business Switches versions prior to 1.3.7.18

Description A vulnerability in the web UI of Cisco Small Business Switches could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper validation of requests sent to the web interface. An attacker could exploit this vulnerability by sending a malicious request to the web interface of an affected device. A successful exploit could allow the attacker to cause an unexpected reload of the device, resulting in a DoS condition.

Recommendations For versions prior to 1.3.7.18, update the firmware to version 1.3.7.18 or later to resolve the issue. As a temporary workaround, consider restricting access to the web interface to minimize the risk of exploitation. Avoid sending malicious requests to the web interface until the issue is resolved.

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2020-00963

CVE-2020-3147

Affected Products

Cisco Small Business Switches

References · 5

• https://bdu.fstec.ru/vul/2020-00963 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2020-3147 · Security Note
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-smlbus-switch-dos-R6VquS2u · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-3147 · Vendor Advisory
• https://t.me/cvenotify/668 · Telegram Post