Milesight UR32L 32.3.0.5 HTTP Request vtysh_ubus set_dmvpn hub_gre_ip buffer overflow

Summaryinfo

A vulnerability marked as critical has been reported in Milesight UR32L 32.3.0.5. The affected element is the function set_dmvpn of the file vtysh_ubus of the component HTTP Request Handler. The manipulation of the argument hub_gre_ip leads to buffer overflow. This vulnerability is referenced as CVE-2023-25102. Remote exploitation of the attack is possible. Furthermore, an exploit is available.

Detailsinfo

A vulnerability was found in Milesight UR32L 32.3.0.5 and classified as critical. This issue affects the function set_dmvpn of the file vtysh_ubus of the component HTTP Request Handler. The manipulation of the argument hub_gre_ip with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to 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. 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_dmvpn function with the hub_ip and the hub_gre_ip variables.

The weakness was published 07/06/2023 as TALOS-2023-1716. It is possible to read the advisory at talosintelligence.com. The identification of this vulnerability is CVE-2023-25102 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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