CVE-2024-1002: totolink n200re_firmware Stack-based Buffer Overflow

Vulnerability summary

CVE-2024-1002 is a high (CVSS 8.8) Stack-based Buffer Overflow vulnerability in totolink n200re_firmware. EPSS estimates a 1.25% chance of exploitation in the next 30 days, higher than 69.1% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 29-01-2024
   PublishedVulnerability first disclosed.
2. 29-05-2025
   Last modifiedVulnerability information updated.

Description

A vulnerability classified as critical was found in Totolink N200RE 9.3.5u.6139_B20201216. Affected by this vulnerability is the function setIpPortFilterRules of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument ePort leads to stack-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-252271. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

• CWE-121Stack-based Buffer OverflowA stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).