Vulnerability Details CVE-2018-19976
In YARA 3.8.1, bytecode in a specially crafted compiled rule is exposed to information about its environment, in libyara/exec.c. This is a consequence of the design of the YARA virtual machine.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 50.1%
CVSS Severity
CVSS v3 Score 5.5
CVSS v2 Score 4.3
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/
- 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/
Products affected by CVE-2018-19976
-
cpe:2.3:a:virustotal:yara:3.8.1