PT-2022-19077 · Tenda · Tenda Ac15

Published 2022-05-04 · Updated 2023-08-08 · CVE-2022-28556

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 AC15 version 15.03.05.20

Description The issue is related to a buffer overflow in the web interface, specifically in the "/goform/setpptpservercfg" API endpoint. The vulnerability arises from the handling of POST data, where the startip and endip variables are copied to the stack using the sanf function, leading to a stack overflow.

Recommendations For version 15.03.05.20, as a temporary workaround, consider restricting access to the "/goform/setpptpservercfg" API endpoint until a patch is available. Avoid using the startip and endip variables in this endpoint to minimize the risk of exploitation. 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-2022-28556

Affected Products

Tenda Ac15

References · 5

• 🔥 https://github.com/doudoudedi/TendaAC15_vul/blob/main/TendaAC15-vul.md · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2022-28556 · Security Note
• https://osv.dev/vulnerability/CVE-2022-28556 · Vendor Advisory
• https://t.me/cvenotify/29694 · Telegram Post
• https://t.me/cibsecurity/41942 · Telegram Post