| Name | CVE-2018-19974 |
| 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). |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 916932 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| yara (PTS) | jessie | 3.1.0-2+deb8u1 | vulnerable |
| stretch | 3.5.0+dfsg-9 | vulnerable |
| buster | 3.9.0-1 | fixed |
| bullseye | 4.0.5-1 | fixed |
| bookworm | 4.2.3-4 | fixed |
| sid, trixie | 4.5.2-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| yara | source | (unstable) | 3.8.1-2 | | | 916932 |
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