Milesight UR32L 32.3.0.5 HTTP Request vtysh_ubus firewall_handler_set mac buffer overflow

Summaryinfo

A vulnerability identified as critical has been detected in Milesight UR32L 32.3.0.5. Affected by this issue is the function firewall_handler_set of the file vtysh_ubus of the component HTTP Request Handler. This manipulation of the argument mac causes buffer overflow. The identification of this vulnerability is CVE-2023-25083. It is possible to initiate the attack remotely. Furthermore, there is an exploit available.

Detailsinfo

A vulnerability was found in Milesight UR32L 32.3.0.5. It has been declared as critical. Affected by this vulnerability is the function firewall_handler_set of the file vtysh_ubus of the component HTTP Request Handler. The manipulation of the argument mac with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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 firewall_handler_set function with the ip and mac variables.

The weakness was shared 07/06/2023 as TALOS-2023-1716. It is possible to read the advisory at talosintelligence.com. This vulnerability is known as CVE-2023-25083 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.

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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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