Vulnerability in Virustotal Yara
CVE-2018-19974
In YARA 3.8.1, bytecode in a specially crafted compiled rule can read uninitialized data from VM scratch memory in libyara/exec.c. This can allow attackers to discover addresses in the real stack (not the YARA virtual stack).
EPSS: 0.013 (67.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.
Affected products
- Virustotal Yara — versions 3.8.1
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (x_refsource_CONFIRM, Exploit, Third Party Advisory, Issue Tracking)
- cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (vendor-advisory, x_refsource_FEDORA)
Frequently asked questions
- What is CVE-2018-19974?
- CVE-2018-19974 is a medium-severity vulnerability in Virustotal Yara, classified under Use of Uninitialized Resource. CVSS score: 5.5/10. Published 2018-12-17.
- How severe is CVE-2018-19974?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2018-19974 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.