Vulnerabilities > CVE-2021-3402 - Integer Overflow or Wraparound vulnerability in multiple products

CVSS 9.1 - CRITICAL

Attack vector

NETWORK

Attack complexity

LOW

Privileges required

NONE

Confidentiality impact

HIGH

Integrity impact

NONE

Availability impact

HIGH

network

low complexity

virustotal

fedoraproject

CWE-190

critical

NVD

Published: 2021-05-14

Updated: 2023-11-07

Summary

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

Vulnerable Configurations

Part	Description	Count
Application	Virustotal Virustotal Yara - Virustotal Yara 1.7.1 Virustotal Yara 1.7.2 Virustotal Yara 2.0.0 Virustotal Yara 2.1.0 Virustotal Yara 3.0.0 Virustotal Yara 3.1.0 Virustotal Yara 3.2.0 Virustotal Yara 3.3.0 Virustotal Yara 3.4.0 Virustotal Yara 3.5.0 Virustotal Yara 3.6.0 Virustotal Yara 3.6.1 Virustotal Yara 3.6.2 Virustotal Yara 3.6.3 Virustotal Yara 3.7.0 Virustotal Yara 3.7.1 Virustotal Yara 3.8.0 Virustotal Yara 3.8.1 Virustotal Yara 3.9.0 Virustotal Yara 3.10.0 Virustotal Yara 3.11.0 Virustotal Yara 4.0.0 Virustotal Yara 4.0.1 Virustotal Yara 4.0.2 Virustotal Yara 4.0.3	31
OS	Fedoraproject Fedoraproject Fedora 33 Fedoraproject Fedora 34	2

Common Weakness Enumeration (CWE)

CWE-190 - Integer Overflow or Wraparound

Common Attack Pattern Enumeration and Classification (CAPEC)

Forced Integer Overflow
This attack forces an integer variable to go out of range. The integer variable is often used as an offset such as size of memory allocation or similarly. The attacker would typically control the value of such variable and try to get it out of range. For instance the integer in question is incremented past the maximum possible value, it may wrap to become a very small, or negative number, therefore providing a very incorrect value which can lead to unexpected behavior. At worst the attacker can execute arbitrary code.

Summary

Vulnerable Configurations

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

References