SB2023120613 - OS Command Injection in FXC routers

Description

This security bulletin contains information about 1 vulnerability.

1) OS Command Injection (CVE-ID: CVE-2023-49897)

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

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

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

The vulnerability exists due to improper input validation. A remote user on the local network can pass specially crafted data to the application and execute arbitrary OS commands on the target system.

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

Note, the vulnerability is being actively exploited in the wild by the Mirai-based botnet named InfectedSlurs.

Remediation

Install update from vendor's website.

References

• https://jvn.jp/en/vu/JVNVU92152057/index.html
• https://www.fxc.jp/news/20231206
• https://www.akamai.com/blog/security-research/zero-day-vulnerability-spreading-mirai-patched