CVE-2021-40393

Debian Security Advisory 5306-1

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

An out-of-bounds write vulnerability exists in the RS-274X aperture macro variables handling functionality of Gerbv 2.7.0 and dev (commit b5f1eacd) and the forked version of Gerbv (commit 71493260). A specially-crafted gerber file can lead to code execution. An attacker can provide a malicious file to trigger this vulnerability.

Se presenta una vulnerabilidad de escritura fuera de límites en la funcionalidad aperture macro variables handling de RS-274X de Gerbv versiones 2.7.0 y dev (commit b5f1eacd) y la versión forked de Gerbv (commit 71493260). Un archivo gerber especialmente diseñado puede conllevar a una ejecución de código. Un atacante puede proporcionar un archivo malicioso para desencadenar esta vulnerabilidad

Claudio Bozzato discovered that Gerbv incorrectly handled certain Gerber files. An attacker could possibly use this issue to crash Gerbv , or execute arbitrary code. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. Claudio Bozzato discovered that Gerbv incorrectly handled certain Gerber files. An attacker could possibly use this issue to disclose information, crash Gerbv , or execute arbitrary code. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-09-01 CVE Reserved
2021-12-22 CVE Published
2024-08-04 CVE Updated
2024-08-04 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 (4)

URL	Tag	Source
https://lists.debian.org/debian-lts-announce/2023/09/msg00040.html	Mailing List

URL	Date	SRC
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1404	2024-08-04

URL	Date	SRC

URL	Date	SRC
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/37OSNNO5N5FJZP6ZBYRJMML5HYMJQIX7	2023-11-07
https://www.debian.org/security/2022/dsa-5306	2023-11-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Gerbv Project Search vendor "Gerbv Project"		Gerbv Search vendor "Gerbv Project" for product "Gerbv"				2.7.0 Search vendor "Gerbv Project" for product "Gerbv" and version "2.7.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				11.0 Search vendor "Debian" for product "Debian Linux" and version "11.0"		-		Affected