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

Summaryinfo

A vulnerability marked as critical has been reported in Milesight UR32L 32.3.0.5. This affects the function set_openvpn_client of the file vtysh_ubus of the component HTTP Request Handler. The manipulation of the argument remote_subnet/remote_mask leads to stack-based overflow. This vulnerability is listed as CVE-2023-25123. The attack may be initiated remotely. In addition, an exploit is available.

Detailsinfo

A vulnerability was found in Milesight UR32L 32.3.0.5. It has been rated as critical. This issue affects the function set_openvpn_client 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. 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. 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_openvpn_client function with the remote_subnet and the remote_mask variables when action is 2.

The weakness was presented 07/06/2023 as TALOS-2023-1716. The advisory is shared at talosintelligence.com. The identification of this vulnerability is CVE-2023-25123 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.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• Milesight

Name

• UR32L

Version

• 32.3.0.5

License

• commercial

CPE 2.3info

• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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