Critical severity9.1NVD Advisory· Published May 14, 2021· Updated Jun 17, 2026
CVE-2021-3402
CVE-2021-3402
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
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
4cpe:2.3:a:virustotal:yara:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:virustotal:yara:*:*:*:*:*:*:*:*range: <4.0.4
- (no CPE)range: <4.0.4
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
5- www.openwall.com/lists/oss-security/2021/01/29/2nvdExploitMailing ListThird Party Advisory
- www.x41-dsec.de/lab/advisories/x41-2021-001-yara/nvdExploitThird Party Advisory
- bugzilla.redhat.com/show_bug.cginvdIssue TrackingThird Party Advisory
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FKNXSH5ERG6NELTXCYVJLUPJJJ2TNEBD/nvd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XXM224OLGI6KAOROLDPPGGCZ2OQVQ6HH/nvd
News mentions
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