VDB-228788 · CVE-2023-31475 · GCVE-0-2023-31475

GL.iNet Device 1.00.220412.00 libglutil.so guci2_get buffer overflow

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.0	$0-$5k	0.00

Summaryinfo

A vulnerability classified as critical was found in GL.iNet Device. Affected is the function guci2_get in the library libglutil.so. Such manipulation leads to buffer overflow. This vulnerability is listed as CVE-2023-31475. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in GL.iNet Device. It has been rated as critical. Affected by this issue is the function guci2_get in the library libglutil.so. The manipulation 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. CVE summarizes:

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.

The weakness was presented 05/11/2023. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2023-31475 since 04/28/2023. There are known technical details, but no exploit is available.

Upgrading to version 3.216 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

GL.iNet

Name

Device

Version

1.00.220412.00

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.1
VulDB Meta Temp Score: 8.0

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CNA Base Score: 9.0
CNA Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Device 3.216

Timelineinfo

04/28/2023 🔍
05/11/2023 +13 days 🔍
05/11/2023 +0 days 🔍
01/27/2025 +627 days 🔍

Sourcesinfo

Advisory: github.com
Status: Confirmed

CVE: CVE-2023-31475 (🔍)
GCVE (CVE): GCVE-0-2023-31475
GCVE (VulDB): GCVE-100-228788

Entryinfo

Created: 05/11/2023 13:47
Updated: 01/27/2025 19:56
Changes: 05/11/2023 13:47 (40), 06/07/2023 15:12 (11), 01/27/2025 19:56 (27)
Complete: 🔍
Cache ID: 216::103