CVE-2021-3402
9.1
CRITICAL
CVSS 3.1
EPSS 0.47%
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
How to fix CVE-2021-3402
To remediate CVE-2021-3402, upgrade the affected package to a fixed version below.
- Debian/yara—upgrade to 4.0.4-1 or later
Is CVE-2021-3402 being exploited?
Low — EPSS is 0.5%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 4.0.4-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |