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Taking over Milesight UR32L routers behind a VPN: 22 vulnerabilities and a full chain

In all, Cisco Talos is releasing 22 security advisories today, nine of which have a CVSS score greater than 8, associated with 69 CVEs.

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#sql#xss#vulnerability#web#mac#linux#cisco#dos#js#rce#buffer_overflow#auth#ssl
CVE-2023-23907: TALOS-2023-1702 || Cisco Talos Intelligence Group

A directory traversal vulnerability exists in the server.js start functionality of Milesight VPN v2.0.2. A specially-crafted network request can lead to arbitrary file read. An attacker can send a network request to trigger this vulnerability.

CVE-2023-22371: TALOS-2023-1703 || Cisco Talos Intelligence Group

An os command injection vulnerability exists in the liburvpn.so create_private_key functionality of Milesight VPN v2.0.2. A specially-crafted network request can lead to command execution. An attacker can send a malicious packet to trigger this vulnerability.

CVE-2023-24497: TALOS-2023-1704 || Cisco Talos Intelligence Group

Cross-site scripting (xss) vulnerabilities exist in the requestHandlers.js detail_device functionality of Milesight VPN v2.0.2. A specially-crafted HTTP request can lead to arbitrary Javascript code injection. An attacker can send an HTTP request to trigger these vulnerabilities.This XSS is exploited through the remote_subnet field of the database

CVE-2023-24583: TALOS-2023-1710 || Cisco Talos Intelligence Group

Two OS command injection vulnerabilities exist in the urvpn_client cmd_name_action functionality of Milesight UR32L v32.3.0.5. A specially crafted network request can lead to arbitrary command execution. An attacker can send a network request to trigger these vulnerabilities.This OS command injection is triggered through a UDP packet.

CVE-2023-22299: TALOS-2023-1712 || Cisco Talos Intelligence Group

An OS command injection vulnerability exists in the vtysh_ubus _get_fw_logs functionality of Milesight UR32L v32.3.0.5. A specially crafted network request can lead to command execution. An attacker can send a network request to trigger this vulnerability.

CVE-2023-22844: TALOS-2023-1700 || Cisco Talos Intelligence Group

An authentication bypass vulnerability exists in the requestHandlers.js verifyToken functionality of Milesight VPN v2.0.2. A specially-crafted network request can lead to authentication bypass. An attacker can send a network request to trigger this vulnerability.

CVE-2023-22319: TALOS-2023-1701 || Cisco Talos Intelligence Group

A sql injection vulnerability exists in the requestHandlers.js LoginAuth functionality of Milesight VPN v2.0.2. A specially-crafted network request can lead to authentication bypass. An attacker can send a malicious packet to trigger this vulnerability.

CVE-2023-25124: TALOS-2023-1716 || Cisco Talos Intelligence Group

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 a buffer overflow. An attacker 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.

CVE-2023-24018: TALOS-2023-1715 || Cisco Talos Intelligence Group

A stack-based buffer overflow vulnerability exists in the libzebra.so.0.0.0 security_decrypt_password functionality of Milesight UR32L v32.3.0.5. A specially crafted HTTP request can lead to a buffer overflow. An authenticated attacker can send an HTTP request to trigger this vulnerability.