Milesight UR32L 32.3.0.5 HTTP Request vtysh_ubus set_pptp remote_subnet/remote_mask stack-based overflow

Summaryinfo

A vulnerability identified as critical has been detected in Milesight UR32L 32.3.0.5. The affected element is the function set_pptp of the file vtysh_ubus of the component HTTP Request Handler. Performing a manipulation of the argument remote_subnet/remote_mask results in stack-based overflow. This vulnerability is identified as CVE-2023-25119. The attack can be initiated remotely. Additionally, an exploit exists.

Detailsinfo

A vulnerability was found in Milesight UR32L 32.3.0.5. It has been classified as critical. This affects the function set_pptp of the file vtysh_ubus of the component HTTP Request Handler. The manipulation of the argument remote_subnet/remote_mask with an unknown input leads to a stack-based overflow vulnerability. CWE is classifying the issue as 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). This is going to have an impact on 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 set_pptp function with the remote_subnet and the remote_mask variables.

The weakness was released 07/06/2023 as TALOS-2023-1716. It is possible to read the advisory at talosintelligence.com. This vulnerability is uniquely identified as CVE-2023-25119 since 02/02/2023. Technical details and a public exploit are known.

The exploit is shared for download 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

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CPE 2.2info

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