Integer overflow in Virustotal Yara
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. Affects all versions before libyara 4.0.4
Vulnerability class: Integer Overflow
EPSS: 0.022 (80.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.
Affected products
- Virustotal Yara
- Fedoraproject Fedora — versions 33, 34
- N/a Libyara — versions libyara 4.0.4
Weakness classification (CWE)
References
- secalert@redhat.com (x_refsource_FEDORA, vendor-advisory)
- secalert@redhat.com (x_refsource_FEDORA, vendor-advisory)
- secalert@redhat.com (Third Party Advisory, x_refsource_MISC, Issue Tracking)
- secalert@redhat.com (Exploit, Mailing List, Third Party Advisory, x_refsource_MISC)
- secalert@redhat.com (Exploit, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-3402?
- CVE-2021-3402 is a critical-severity vulnerability in Virustotal Yara, classified under Integer Overflow or Wraparound. CVSS score: 9.1/10. Published 2021-05-14.
- How severe is CVE-2021-3402?
- Critical severity. CVSS v3 base score is 9.1 out of 10.