VDB-223237 · CVE-2023-26767 · Issue 1292

Liblouis 3.24.0 logginc.c lou_logFile 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.
5.8	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Liblouis 3.24.0. It has been rated as critical. This vulnerability affects the function lou_logFile of the file logginc.c. This manipulation causes buffer overflow. This vulnerability is tracked as CVE-2023-26767. The attack is possible to be carried out remotely. No exploit exists. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability classified as critical was found in Liblouis 3.24.0. Affected by this vulnerability is the function lou_logFile of the file logginc.c. The manipulation with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect availability. The summary by CVE is:

Buffer Overflow vulnerability found in Liblouis v.3.24.0 allows a remote attacker to cause a denial of service via the lou_logFile function at logginc.c endpoint.

The weakness was disclosed 03/16/2023 as 1292. The advisory is shared at github.com. This vulnerability is known as CVE-2023-26767 since 02/27/2023. Technical details are known, but no exploit is available.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the databases at EUVD (EUVD-2023-30560) and CERT Bund (WID-SEC-2023-2853). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

Open Source CentOS
Debian Linux
Amazon Linux 2
Red Hat Enterprise Linux
Ubuntu Linux
SUSE Linux
Oracle Linux
Gentoo Linux
Red Hat OpenShift
Meinberg LANTIME

Productinfo

Name

Liblouis

Version

3.24.0

Website

Product: https://github.com/liblouis/liblouis/

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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: Patch
Status: 🔍

0-Day Time: 🔍

Patch: github.com

Timelineinfo

02/27/2023 🔍
03/16/2023 +17 days 🔍
03/16/2023 +0 days 🔍
12/30/2025 +1020 days 🔍

Sourcesinfo

Product: github.com

Advisory: 1292
Status: Confirmed

CVE: CVE-2023-26767 (🔍)
GCVE (CVE): GCVE-0-2023-26767
GCVE (VulDB): GCVE-100-223237
EUVD: 🔍
CERT Bund: WID-SEC-2023-2853 - Red Hat Enterprise Linux: Mehrere Schwachstellen

Entryinfo

Created: 03/16/2023 20:31
Updated: 12/30/2025 23:56
Changes: 03/16/2023 20:31 (41), 04/08/2023 18:39 (11), 11/11/2025 03:23 (16), 12/30/2025 23:56 (7)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.