What is the CVSS score of CVE-2023-31475?

CVE-2023-31475 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 13.7%.

Is there a public PoC exploit available for CVE-2023-31475?

Yes, a public proof-of-concept exploit is available for CVE-2023-31475. Prioritise patching immediately. EPSS: 13.7%.

Gl S20 Firmware CVE-2023-31475

CRITICAL

Classic Buffer Overflow (CWE-120)

2023-05-11 cve@mitre.org

Buffer Overflow Gl S20 Firmware Gl X3000 Firmware Gl Mt3000 Firmware Gl Mt2500 Firmware Gl Mt2500A Firmware Gl Axt1800 Firmware Gl A1300 Firmware Gl Ax1800 Firmware Gl Sft1200 Firmware Gl Mt1300 Firmware Gl E750 Firmware Gl Mv1000 Firmware Gl Mv1000W Firmware Gl S10 Firmware Gl S200 Firmware Gl S1300 Firmware Gl Sf1200 Firmware Gl B1300 Firmware Gl B2200 Firmware Gl Ap1300 Firmware Gl Ap1300Lte Firmware Gl X1200 Firmware Gl X750 Firmware Gl X300B Firmware Gl Xe300 Firmware Gl Ar750S Firmware Gl Ar750 Firmware Gl Mifi Firmware Gl Mt300N V2 Firmware Gl Ar300M Firmware Gl Usb150 Firmware Microuter N300 Firmware

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

May 11, 2023 - 11:15 nvd

CRITICAL 9.8

DescriptionNVD

An issue was discovered on GL.iNet devices before 3.216. The function guci2_get() found in libglutil.so has a buffer overflow when an item is requested from a UCI context, and the value is pasted into a char pointer to a buffer without checking the size of the buffer.

AnalysisAI

An issue was discovered on GL.iNet devices before 3.216. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Buffer Copy without Size Check (CWE-120), which allows attackers to overflow a buffer to corrupt adjacent memory. An issue was discovered on GL.iNet devices before 3.216. The function guci2_get() found in libglutil.so has a buffer overflow when an item is requested from a UCI context, and the value is pasted into a char pointer to a buffer without checking the size of the buffer. Affected products include: Gl-Inet Gl-S20 Firmware, Gl-Inet Gl-X3000 Firmware, Gl-Inet Gl-Mt3000 Firmware, Gl-Inet Gl-Mt2500 Firmware, Gl-Inet Gl-Mt2500A Firmware. Version information: before 3.216..

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Always validate buffer sizes before copy operations. Use bounded functions (strncpy, snprintf). Enable compiler protections.