vulnwire
5.5med

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.

Published 7 y ago · modified 4 mo ago · JSON

CVSS
5.5
v3.0 · NVD
CISA KEV
No
not known exploited
EPSS
1.3%
percentile 71%
Public exploits
0
none known

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 (EPSS)

1.32% probability of exploitation in the next 30 days, higher than 71% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.05.5CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
NVD2.04.3AV:N/AC:M/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

  • bnbdr.github.io /posts/extracheese/ · x_refsource_MISC, x_transferred
  • github.com /VirusTotal/yara/issues/999 · x_refsource_CONFIRM, x_transferred
  • github.com /bnbdr/swisscheese/ · x_refsource_MISC, x_transferred
  • lists.fedoraproject.org /archives/list/package-announce%40lists.fedoraproject.org/message/DFFXDAMP6GJ337LIOTVF5I4T · vendor-advisory, x_refsource_FEDORA, x_transferred

Sources

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.