CVE-2024-7909: totolink ex1200l_firmware Stack-based Buffer Overflow

Vulnerability summary

CVE-2024-7909 is a critical (CVSS 9.8) Stack-based Buffer Overflow vulnerability in totolink ex1200l_firmware. EPSS estimates a 1.47% chance of exploitation in the next 30 days, higher than 73.6% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 18-08-2024
   PublishedVulnerability first disclosed.
2. 21-08-2024
   Last modifiedVulnerability information updated.

Description

A vulnerability has been found in TOTOLINK EX1200L 9.3.5u.6146_B20201023 and classified as critical. Affected by this vulnerability is the function setLanguageCfg of the file /www/cgi-bin/cstecgi.cgi. The manipulation of the argument langType leads to stack-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. 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).
• CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.