PT-2023-5068 · Milesight · Milesight Ur32L

Francesco Benvenuto · Published 2023-07-06 · Updated 2023-08-02 · CVE-2023-25103

Positive Technologies (AI Summary)

CVSS v2.0

8.3

High

Base vector

AV:N/AC:L/Au:M/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Milesight UR32L version 32.3.0.5

Description The issue is caused by a buffer overflow in the set dmvpn function of the Milesight UR32L router's firmware, which can be exploited by a remote attacker to execute arbitrary code. A specially crafted HTTP request can trigger this buffer overflow, specifically affecting the gre ip and gre mask variables.

Recommendations For Milesight UR32L version 32.3.0.5, consider disabling the set dmvpn function until a patch is available to prevent exploitation. Restrict access to the vtysh ubus binary to minimize the risk of arbitrary code execution. Avoid using the gre ip and gre mask variables in the affected HTTP requests until the issue is resolved.

Exploit

Fix

Stack Overflow

Memory Corruption

Weakness Enumeration

CWE-121

CWE-787

Related Identifiers

BDU:2023-05628

CVE-2023-25103

Affected Products

Milesight Ur32L

References · 5

• 🔥 https://talosintelligence.com/vulnerability_reports/TALOS-2023-1716 · Exploit
• https://bdu.fstec.ru/vul/2023-05628 · Security Note
• https://osv.dev/vulnerability/CVE-2023-25103 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-25103 · Security Note
• https://vuldb.com/ru/?id.233194 · Note