CVE-2021-3402

Severity Score

9.1

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

An integer overflow and several buffer overflow reads in libyara/modules/macho/macho.c in YARA v4.0.3 and earlier could allow an attacker to either cause denial of service or information disclosure via a malicious Mach-O file. Affects all versions before libyara 4.0.4

Un desbordamiento de enteros y varias lecturas de desbordamiento de búfer en el archivo libyara/modules/macho/macho.c en YARA versiones v4.0.3 y anteriores, podrían permitir a un atacante causar una denegación de servicio o una divulgación de información por medio de un archivo Mach-O malicioso. Afecta a todas las versiones anteriores a libyara 4.0.4

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-02-08 CVE Reserved
2021-05-14 CVE Published
2024-01-28 EPSS Updated
2024-08-03 CVE Updated
2024-08-03 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-190: Integer Overflow or Wraparound

CAPEC

References (5)

URL	Tag	Source
https://bugzilla.redhat.com/show_bug.cgi?id=1930175	Issue Tracking

URL	Date	SRC
https://www.openwall.com/lists/oss-security/2021/01/29/2	2024-08-03
https://www.x41-dsec.de/lab/advisories/x41-2021-001-yara	2024-08-03

URL	Date	SRC

URL	Date	SRC
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FKNXSH5ERG6NELTXCYVJLUPJJJ2TNEBD	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XXM224OLGI6KAOROLDPPGGCZ2OQVQ6HH	2023-11-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Virustotal Search vendor "Virustotal"		Yara Search vendor "Virustotal" for product "Yara"				< 4.0.4 Search vendor "Virustotal" for product "Yara" and version " < 4.0.4"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				33 Search vendor "Fedoraproject" for product "Fedora" and version "33"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				34 Search vendor "Fedoraproject" for product "Fedora" and version "34"		-		Affected