CVE-2018-19976

NameCVE-2018-19976
DescriptionIn 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium (attack range: remote)
Debian Bugs916932

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
yara (PTS)jessie3.1.0-2+deb8u1vulnerable
stretch3.5.0+dfsg-9vulnerable
buster, sid3.8.1-2fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
yarasource(unstable)3.8.1-2medium916932

Notes

[stretch] - yara <no-dsa> (Minor issue)
[jessie] - yara <no-dsa> (Minor issue)
https://github.com/VirusTotal/yara/issues/999
https://bnbdr.github.io/posts/extracheese/
https://github.com/bnbdr/swisscheese/
https://github.com/VirusTotal/yara/commit/6acc08d7329413f60e0976be017e18a581450d7a
https://github.com/VirusTotal/yara/commit/d8f714891ed92da15d50b397b74d1d9431e9c54c

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