CVE-2019-6989: tp-link tl-wr940n_firmware Out-of-bounds Write

Vulnerability summary

CVE-2019-6989 is a high (CVSS 9.0) Out-of-bounds Write vulnerability in tp-link tl-wr940n_firmware. EPSS estimates a 11.37% chance of exploitation in the next 30 days, higher than 95.9% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 06-06-2019
   PublishedVulnerability first disclosed.
2. 04-08-2024
   Last modifiedVulnerability information updated.

Description

TP-Link TL-WR940N is vulnerable to a stack-based buffer overflow, caused by improper bounds checking by the ipAddrDispose function. By sending specially crafted ICMP echo request packets, a remote authenticated attacker could overflow a buffer and execute arbitrary code on the system with elevated privileges.

• CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.