cve/2018/CVE-2018-19975.md

CVE-2018-19975

Description

In YARA 3.8.1, bytecode in a specially crafted compiled rule can read data from any arbitrary address in memory, in libyara/exec.c. Specifically, OP_COUNT can read a DWORD.

POC

Reference

• https://bnbdr.github.io/posts/extracheese/
• https://bnbdr.github.io/posts/extracheese/
• https://github.com/VirusTotal/yara/issues/999
• https://github.com/VirusTotal/yara/issues/999
• https://github.com/bnbdr/swisscheese/
• https://github.com/bnbdr/swisscheese/

Github

• https://github.com/bnbdr/swisscheese