Vulnerability 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
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Virustotal | Yara | < 4.0.4 |
| Fedoraproject | Fedora | 33 |
Related Weaknesses (CWE)
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1930175Issue TrackingThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://www.openwall.com/lists/oss-security/2021/01/29/2ExploitMailing ListThird Party Advisory
- https://www.x41-dsec.de/lab/advisories/x41-2021-001-yara/ExploitThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1930175Issue TrackingThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://www.openwall.com/lists/oss-security/2021/01/29/2ExploitMailing ListThird Party Advisory
- https://www.x41-dsec.de/lab/advisories/x41-2021-001-yara/ExploitThird Party Advisory
FAQ
What is CVE-2021-3402?
CVE-2021-3402 is a vulnerability with a CVSS score of 9.1 (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 vi...
How severe is CVE-2021-3402?
CVE-2021-3402 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2021-3402?
Check the references section above for vendor advisories and patch information. Affected products include: Virustotal Yara, Fedoraproject Fedora.