Multiple buffer overflow vulnerabilities exist in the vtysh_ubus binary of Milesight UR32L v32.3.0.5 due to the use of an unsafe sprintf pattern. A specially crafted HTTP request can lead to a buffer overflow. An attacker can send HTTP requests to trigger these vulnerabilities.This buffer overflow occurs in the set_dmvpn function with the gre_ip and the gre_mask variables.

References

• https://nvd.nist.gov/vuln/detail/CVE-2023-25103
• https://talosintelligence.com/vulnerability_reports/TALOS-2023-1716