CVE-2018-19974

Published: 17/12/2018 Updated: 07/11/2023

CVSS v2 Base Score: 4.3 | Impact Score: 2.9 | Exploitability Score: 8.6

CVSS v3 Base Score: 5.5 | Impact Score: 3.6 | Exploitability Score: 1.8

VMScore: 383

Vector: AV:N/AC:M/Au:N/C:P/I:N/A:N

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 malicious users to discover addresses in the real stack (not the YARA virtual stack).

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virustotal yara 3.8.1

Debian Bug report logs - #916932 yara: CVE-2018-19974, CVE-2018-19975, CVE-2018-19976 Package: yara; Maintainer for yara is Debian Security Tools <team+pkg-security@trackerdebianorg>; Source for yara is src:yara (PTS, buildd, popcon) Reported by: Markus Koschany <apo@debianorg> Date: Thu, 20 Dec 2018 16:21:01 UTC ...

CWE-908 https://github.com/VirusTotal/yara/issues/999 https://github.com/bnbdr/swisscheese/https://bnbdr.github.io/posts/extracheese/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DFFXDAMP6GJ337LIOTVF5I4T6QGMN3ZR/https://nvd.nist.gov https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=916932

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CVE-2018-19974

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