Milesight UR32L 32.3.0.5 HTTP Request vtysh_ubus set_openvpn_client old_remote_subnet/old_remote_mask stack-based overflow

Summaryinfo

A vulnerability labeled as critical has been found in Milesight UR32L 32.3.0.5. The impacted element is the function set_openvpn_client of the file vtysh_ubus of the component HTTP Request Handler. Executing a manipulation of the argument old_remote_subnet/old_remote_mask can lead to stack-based overflow. This vulnerability is tracked as CVE-2023-25122. The attack can be launched remotely. Moreover, an exploit is present.

Detailsinfo

A vulnerability was found in Milesight UR32L 32.3.0.5. It has been declared as critical. This vulnerability affects the function set_openvpn_client of the file vtysh_ubus of the component HTTP Request Handler. The manipulation of the argument old_remote_subnet/old_remote_mask with an unknown input leads to a stack-based overflow vulnerability. The CWE definition for the vulnerability is CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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 arbitrary code execution. An attacker with high privileges can send HTTP requests to trigger these vulnerabilities.This buffer overflow occurs in the set_openvpn_client function with the old_remote_subnet and the old_remote_mask variables.

The weakness was disclosed 07/06/2023 as TALOS-2023-1716. The advisory is shared for download at talosintelligence.com. This vulnerability was named CVE-2023-25122 since 02/02/2023. Technical details and also a public exploit are known.

It is possible to download the exploit at talosintelligence.com. It is declared as proof-of-concept.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• Milesight

Name

• UR32L

Version

• 32.3.0.5

License

• commercial

CPE 2.3info

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CPE 2.2info

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