PT-2020-13514 · Tenda · Tenda Ac18+3

Joel · Published 2020-05-22 · Updated 2020-05-27 · CVE-2020-13391

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions Tenda AC6 version 1.0 V15.03.05.19 multi TD01 Tenda AC9 version 1.0 V15.03.05.19(6318) CN Tenda AC9 version 3.0 V15.03.06.42 multi Tenda AC15 version 1.0 V15.03.05.19 multi TD01 Tenda AC18 version 15.03.05.19(6318) CN

Description A buffer overflow issue exists in the router's web server, specifically in the httpd. The vulnerability occurs when processing the speed dir parameter for a POST request to the "/goform/SetSpeedWan" API endpoint. An attacker can exploit this by constructing a payload that allows for arbitrary code execution attacks.

Recommendations For Tenda AC6 version 1.0 V15.03.05.19 multi TD01, consider disabling the httpd service until a patch is available. For Tenda AC9 version 1.0 V15.03.05.19(6318) CN, restrict access to the "/goform/SetSpeedWan" API endpoint to minimize the risk of exploitation. For Tenda AC9 version 3.0 V15.03.06.42 multi, avoid using the speed dir parameter in the affected API endpoint until the issue is resolved. For Tenda AC15 version 1.0 V15.03.05.19 multi TD01, restrict access to the vulnerable httpd service to minimize the risk of exploitation. For Tenda AC18 version 15.03.05.19(6318) CN, consider disabling the httpd service until a patch is available.

Exploit

Fix

Buffer Overflow

Weakness Enumeration

CWE-120

Related Identifiers

CVE-2020-13391

Affected Products

Tenda Ac15

Tenda Ac18

Tenda Ac6

Tenda Ac9

References · 5

• 🔥 https://joel-malwarebenchmark.github.io/blog/2020/04/28/cve-2020-13391-Tenda-vulnerability · Exploit
• 🔥 https://joel-malwarebenchmark.github.io · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2020-13391 · Security Note
• https://osv.dev/vulnerability/CVE-2020-13391 · Vendor Advisory
• https://t.me/cibsecurity/12300 · Telegram Post