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CVE-2021-3402 Details

Description

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

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:9.1 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://bugzilla.redhat.com/show_bug.cgi?id=1930175	CVE	Issue TrackingThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FKNXSH5ERG6NELTXCYVJLUPJJJ2TNEBD/	CVE
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XXM224OLGI6KAOROLDPPGGCZ2OQVQ6HH/	CVE
https://www.openwall.com/lists/oss-security/2021/01/29/2	CVE	ExploitMailing ListThird Party Advisory
https://www.x41-dsec.de/lab/advisories/x41-2021-001-yara/	CVE	ExploitThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1930175	[email protected]	Issue TrackingThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FKNXSH5ERG6NELTXCYVJLUPJJJ2TNEBD/	[email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XXM224OLGI6KAOROLDPPGGCZ2OQVQ6HH/	[email protected]
https://www.openwall.com/lists/oss-security/2021/01/29/2	[email protected]	ExploitMailing ListThird Party Advisory
https://www.x41-dsec.de/lab/advisories/x41-2021-001-yara/	[email protected]	ExploitThird Party Advisory

see all 10 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-190	Integer Overflow or Wraparound	[email protected]

Affected Products

Product	Versions
virustotal yara	< 4.0.4
CPE cpe:2.3:a:virustotal:yara:::::::: Remediation No remediation found in references.
fedoraproject fedora	33 34
CPE cpe:2.3:o:fedoraproject:fedora:33:::::::* cpe:2.3:o:fedoraproject:fedora:34:::::::* Remediation No remediation found in references.

Change History

5 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Nov 7, 2023	CVE Modified	[email protected]
May 24, 2021	Initial Analysis	[email protected]