Unscored CVE-2018-19974 EUVD-2018-11641GHSA-qgr5-73wm-7w3g

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…

Published Dec 17, 2018 · Updated Aug 5, 2024 · Assigned by mitre

Package: yara Package: yara Ecosystem: Debian Ecosystem: Ubuntu

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).

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Debian

Security tracker ↗

Release	Package	Fixed in	Advisory
Debian 14	yara	3.8.1-2	—
Debian 13	yara	3.8.1-2	—
Debian 12	yara	3.8.1-2	—

Ubuntu