PT-2024-1311 · Totolink · Totolink N200Re

Jylsec · Published 2024-01-29 · Updated 2024-05-17 · CVE-2024-0997

Positive Technologies (AI Summary)

CVSS v2.0

9.0

High

Base vector

AV:N/AC:L/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Totolink N200RE version 9.3.5u.6139 B20201216

Description A critical issue was found in the function setOpModeCfg of the file /cgi-bin/cstecgi.cgi, where the manipulation of the argument pppoeUser leads to a stack-based buffer overflow. This issue can be exploited remotely, potentially affecting the confidentiality, integrity, and availability of protected information. The exploit has been disclosed to the public.

Recommendations For Totolink N200RE version 9.3.5u.6139 B20201216, as a temporary workaround, consider disabling the setOpModeCfg function until a patch is available. Restrict access to the /cgi-bin/cstecgi.cgi file to minimize the risk of exploitation. Avoid using the parameter pppoeUser in the affected API endpoint until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this issue.

Exploit

Fix

Stack Overflow

Buffer Overflow

Weakness Enumeration

CWE-121

CWE-119

Related Identifiers

BDU:2024-00762

CVE-2024-0997

Affected Products

Totolink N200Re

References · 10

• 🔥 https://jylsec.notion.site/TOTOLINK-N200RE-has-stack-buffer-overflow-vulnerability-in-setOpModeCfg-9faac02b13d84bd3b7fe84aab68c7add?pvs=4 · Exploit
• https://bdu.fstec.ru/vul/2024-00762 · Security Note
• https://osv.dev/vulnerability/CVE-2024-0997 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-0997 · Security Note
• https://vuldb.com/?ctiid.252266 · Note
• https://t.me/cvenotify/69047 · Telegram Post
• https://vuldb.com/?id.252266 · Note
• https://twitter.com/RedPacketSec/status/1752634125758992580 · Twitter Post
• https://jylsec.notion.site/TOTOLINK-N200RE-has-stack-buffer-overflow-vulnerability-in-setOpModeCfg-9faac02b13d84bd3b7fe84aab68c7add · Note
• https://vuldb.com/ru/?id.252266 · Note