Milesight UR32L 32.3.0.5 HTTP Request vtysh_ubus firewall_handler_set old_ip/old_mac stack-based overflow

Summaryinfo

A vulnerability was found in Milesight UR32L 32.3.0.5 and classified as critical. The impacted element is the function firewall_handler_set of the file vtysh_ubus of the component HTTP Request Handler. Such manipulation of the argument old_ip/old_mac leads to stack-based overflow. This vulnerability is traded as CVE-2023-25082. The attack may be launched remotely. Furthermore, there is an exploit available.

Detailsinfo

A vulnerability, which was classified as critical, has been found 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. The manipulation of the argument old_ip/old_mac with an unknown input leads to a stack-based overflow vulnerability. Using CWE to declare the problem leads to 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). Impacted is 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 firewall_handler_set function with the old_ip and old_mac variables.

The weakness was shared 07/06/2023 as TALOS-2023-1716. The advisory is available at talosintelligence.com. This vulnerability is handled as CVE-2023-25082 since 02/02/2023. Technical details as well as a public exploit are known.

The exploit is available 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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