Buffer Overflow Vulnerability in GL.iNet Devices
CVE-2023-31475

9.8CRITICAL

Key Information:

Vendor

Gl-inet

Status
Gl-s20 Firmware
Vendor
CVE Published:
11 May 2023

What is CVE-2023-31475?

A buffer overflow vulnerability exists in GL.iNet devices prior to version 3.216 due to improper handling of data in the guci2_get() function. When a user requests an item from a UCI context, the value is assigned to a character pointer without sufficient buffer size checks. This flaw can lead to unintended data exposure and may allow attackers to execute arbitrary code, compromising the security of the device.

References

https://www.gl-inet.com
https://github.com/gl-inet/CVE-issues/blob/main/3.215/Buf...
https://justinapplegate.me/2023/glinet-CVE-2023-31475/

EPSS Score

13% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.