VDB-247557 · CVE-2023-49990 · Issue 1824

espeak-ng 1.52-dev synthdata.c SetUpPhonemeTable 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.
5.4	$0-$5k	0.00

Summaryinfo

A vulnerability identified as critical has been detected in espeak-ng 1.52-dev. This affects the function SetUpPhonemeTable of the file synthdata.c. Performing a manipulation results in buffer overflow. This vulnerability is reported as CVE-2023-49990. No exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, was found in espeak-ng 1.52-dev. This affects the function SetUpPhonemeTable of the file synthdata.c. The manipulation with an unknown input leads to a buffer overflow vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Espeak-ng 1.52-dev was discovered to contain a buffer-overflow via the function SetUpPhonemeTable at synthdata.c.

The weakness was disclosed 12/12/2023. The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2023-49990 since 12/04/2023. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 237620 (Debian dla-4198 : espeak-ng - security update), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (237620). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

espeak-ng

Version

1.52-dev

Website

Product: https://github.com/espeak-ng/espeak-ng/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.4

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

NVD Base Score: 5.3
NVD Vector: 🔍

CNA Base Score: 5.3
CNA 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: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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

Nessus ID: 237620
Nessus Name: Debian dla-4198 : espeak-ng - security update

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/04/2023 🔍
12/12/2023 +8 days 🔍
12/12/2023 +0 days 🔍
05/31/2025 +536 days 🔍

Sourcesinfo

Product: github.com

Advisory: 1824
Status: Confirmed

CVE: CVE-2023-49990 (🔍)
GCVE (CVE): GCVE-0-2023-49990
GCVE (VulDB): GCVE-100-247557

Entryinfo

Created: 12/12/2023 14:48
Updated: 05/31/2025 17:45
Changes: 12/12/2023 14:48 (38), 01/02/2024 12:51 (1), 01/02/2024 12:59 (11), 10/10/2024 03:08 (25), 05/31/2025 17:45 (2)
Complete: 🔍
Cache ID: 216::103

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