CVE-2018-19974 | BDVDB-2026-110618 Detail

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).

Impact#

No impact statement in the source data.

Weaknesses#

No weakness recorded in the source data.

References#

https://bnbdr.github.io/posts/extracheese/
https://github.com/VirusTotal/yara/issues/999
https://github.com/bnbdr/swisscheese/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DFFXDAMP6GJ337LIOTVF5I4T6QGMN3ZR/

Exploit#

No public exploit known

History#

Version 12018-12-17Record published in the CVE List.
Version 22024-08-05Most recent update recorded in the CVE List.