PT-2021-2393 · NetGear · Netgear Jgs516Pe/Gs116Ev2

Published 2021-03-08 · Updated 2021-03-16 · CVE-2020-35233

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions: NETGEAR JGS516PE/GS116Ev2 version 2.6.0.43

Description: The TFTP server fails to handle multiple connections, allowing external attackers to force device reboots by sending concurrent connections, resulting in a denial of service attack. This issue is related to an uncontrolled resource consumption vulnerability in the TFTP server of the affected devices.

Recommendations: For NETGEAR JGS516PE/GS116Ev2 version 2.6.0.43, consider disabling the TFTP server as a temporary workaround to prevent exploitation until a patch is available. Restrict access to the device to minimize the risk of external attackers sending concurrent connections. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Resource Exhaustion

Weakness Enumeration

CWE-400

Related Identifiers

BDU:2021-01635

CVE-2020-35233

Affected Products

Netgear Jgs516Pe/Gs116Ev2

References · 8

• https://research.nccgroup.com/2021/03/08/technical-advisory-multiple-vulnerabilities-in-netgear-prosafe-plus-jgs516pe-gs116ev2-switches · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-35233 · Security Note
• https://osv.dev/vulnerability/CVE-2020-35233 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-01635 · Security Note
• https://t.me/cybersecuritytechnologies/2861 · Telegram Post
• https://t.me/cibsecurity/24732 · Telegram Post
• https://t.me/cvenotify/11130 · Telegram Post
• https://cxsecurity.com/cveshow/CVE-2020-35233 · Note