Vulnerability · Published Jan 29, 2024 · Assigned by VulDB

CVE-2024-0997Totolink N200RE cstecgi.cgi setOpModeCfg stack-based overflow

High 7.2

In plain English

A high-severity stack buffer overflow in N200RE from Totolink. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 70% of all known vulnerabilities).

Severity (CVSS 3.1)7.2High

Exploit odds (30 days)1.2%top 30.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability was found in Totolink N200RE 9.3.5u.6139_B20201216 and classified as critical. Affected by this issue is the function setOpModeCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument pppoeUser leads to stack-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. VDB-252266 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Affected products (as reported)

Vendor	Product	Versions
Totolink	N200RE	9.3.5u.6139_B20201216

Weakness: CWE-121 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

References

https://vuldb.com/?id.252266 vdb-entry, technical-description
https://vuldb.com/?ctiid.252266 signature, permissions-required
https://jylsec.notion.site/TOTOLINK-N200RE-has-stack-buffer-overflow-vulnerability-in-setOpModeCfg-9faac02b13d84bd3b7fe84aab68c7add?pvs=4 exploit