PT-2022-12339 · Tenda · Tenda Router Ax12

Published 2022-02-16 · Updated 2022-02-24 · CVE-2021-45391

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Tenda Router AX12 version V22.03.01.21 CN

Description A Buffer Overflow issue exists in the sub 422CE4 function in the goform/setIPv6Status binary file /usr/sbin/httpd via the conType parameter, causing a Denial of Service.

Recommendations For Tenda Router AX12 version V22.03.01.21 CN, as a temporary workaround, consider disabling the sub 422CE4 function in the /usr/sbin/httpd binary file until a patch is available. Restrict access to the goform/setIPv6Status endpoint to minimize the risk of exploitation. Avoid using the conType parameter in the affected endpoint until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2021-45391

Affected Products

Tenda Router Ax12

References · 9

• 🔥 https://github.com/sec-bin/IoT-CVE/tree/main/Tenda/AX12/1 · Exploit
• https://tenda.com.cn/product/AX12.html · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-45391 · Security Note
• https://osv.dev/vulnerability/CVE-2021-45391 · Vendor Advisory
• https://tenda.com.cn · Vendor Advisory
• https://t.me/cvenotify/27241 · Telegram Post
• http://tendawifi.com/index.html · Note
• https://t.me/cibsecurity/37566 · Telegram Post
• https://t.me/cvenotify/26858 · Telegram Post