CVE-2021-3402 - 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

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CRITICAL

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

Published May 14, 2021

9.1

CRITICAL

CVSS 3.1

EPSS 2.20%

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

Affected products

Vendor n/a Product Libyara Default
n/a
- Version
  libyara 4.0.4
  Status
  affected
  Constraints
  -

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

n/a

Libyara

n/a

Version	Status	Constraints
libyara 4.0.4	affected	-

Remediation

No remediation recorded yet.

Weaknesses (1)

CWE-190

Integer Overflow

References (5)

https://bugzilla.redhat.com/show_bug.cgi?id=1930175
x_refsource_MISCIssue TrackingThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FKNXSH5ERG6NELTXCYVJLUPJJJ2TNEBD/
vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XXM224OLGI6KAOROLDPPGGCZ2OQVQ6HH/
vendor-advisoryx_refsource_FEDORA
https://www.openwall.com/lists/oss-security/2021/01/29/2
x_refsource_MISCExploitMailing ListThird Party Advisory
https://www.x41-dsec.de/lab/advisories/x41-2021-001-yara/
x_refsource_MISCExploitThird Party Advisory

Link	Providers	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1930175		x_refsource_MISCIssue TrackingThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FKNXSH5ERG6NELTXCYVJLUPJJJ2TNEBD/		vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XXM224OLGI6KAOROLDPPGGCZ2OQVQ6HH/		vendor-advisoryx_refsource_FEDORA
https://www.openwall.com/lists/oss-security/2021/01/29/2		x_refsource_MISCExploitMailing ListThird Party Advisory
https://www.x41-dsec.de/lab/advisories/x41-2021-001-yara/		x_refsource_MISCExploitThird Party Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner redhat

Published May 14, 2021

Updated Aug 3, 2024

Reserved Feb 8, 2021

Link CVE-2021-3402

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2021-3402

Red Hat

Severity n/a

Public date n/a

Links CVE-2021-3402