CVE-2018-19974
5.5
MEDIUM
CVSS 3.1
EPSS 0.25%
Description
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).
How to fix CVE-2018-19974
To remediate CVE-2018-19974, upgrade the affected package to a fixed version below.
- Debian/yara—upgrade to 3.8.1-2 or later
Is CVE-2018-19974 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 3.8.1-2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.5 | CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N |