CVE-2023-36355: tp-link tl-wr940n_firmware Classic Buffer Overflow

Vulnerability summary

CVE-2023-36355 is a critical (CVSS 9.9) Classic Buffer Overflow vulnerability in tp-link tl-wr940n_firmware. EPSS estimates a 31.73% chance of exploitation in the next 30 days, higher than 98.2% of scored vulnerabilities. 2 public exploits are recorded.

Timeline

1. 22-06-2023
   PublishedVulnerability first disclosed.
2. 02-12-2024
   Last modifiedVulnerability information updated.

Description

TP-Link TL-WR940N V4 was discovered to contain a buffer overflow via the ipStart parameter at /userRpm/WanDynamicIpV6CfgRpm. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted GET request.

• CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.