SB2025012122 - Remote code execution in TP-Link TL-WR940N V3 and V4

Description

This security bulletin contains information about 1 vulnerability.

1) Buffer overflow (CVE-ID: CVE-2024-54887)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Green

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in the "dnsserver1" and "dnsserver2" parameters in the /userRpm/Wan6to4TunnelCfgRpm.htm endpoint. A remote user on the local network can trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Remediation

Cybersecurity Help is not aware of any official remediation provided by the vendor.

References

• http://tp-link.com
• https://github.com/JBince/vulnerability-research/tree/main/CVE-2024-54887
• https://github.com/advisories/GHSA-qf55-97mm-vqcj