CVE-2023-36747

Debian Security Advisory 5653-1

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Multiple heap-based buffer overflow vulnerabilities exist in the fstReaderIterBlocks2 fstWritex len functionality of GTKWave 3.3.115. A specially crafted .fst file can lead to memory corruption. A victim would need to open a malicious file to trigger these vulnerabilities.This vulnerability concerns the handling of `len` in `fstWritex` when `beg_time` does not match the start of the time table.

Existen múltiples vulnerabilidades de desbordamiento de búfer de almacenamiento dinámico en la funcionalidad fstReaderIterBlocks2 fstWritex len de GTKWave 3.3.115. Un archivo .fst especialmente manipulado puede provocar daños en la memoria. Una víctima necesitaría abrir un archivo malicioso para activar estas vulnerabilidades. Esta vulnerabilidad se refiere al manejo de "len" en "fstWritex" cuando "beg_time" no coincide con el inicio del cronograma.

Claudio Bozzato discovered multiple security issues in gtkwave, a file waveform viewer for VCD (Value Change Dump) files, which may result in the execution of arbitrary code if malformed files are opened.

*Credits: Discovered by Claudio Bozzato of Cisco Talos.

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

High

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2023-06-26 CVE Reserved
2024-01-08 CVE Published
2025-02-13 CVE Updated
2025-02-13 First Exploit
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-787: Out-of-bounds Write

CAPEC

References (2)

URL	Tag	Source
https://lists.debian.org/debian-lts-announce/2024/04/msg00007.html

URL	Date	SRC
https://talosintelligence.com/vulnerability_reports/TALOS-2023-1793	2025-02-13

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Tonybybell Search vendor "Tonybybell"		Gtkwave Search vendor "Tonybybell" for product "Gtkwave"				3.3.115 Search vendor "Tonybybell" for product "Gtkwave" and version "3.3.115"		-		Affected