Out-of-bounds Read in Virustotal Yara

CVE-2017-5923

libyara/grammar.y in YARA 3.5.0 allows remote attackers to cause a denial of service (heap-based out-of-bounds read and application crash) via a crafted rule that is mishandled in the yara_yyparse function.

Vulnerability class: Buffer Overflow

EPSS: 0.016 (74.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2017-5923?
CVE-2017-5923 is a high-severity vulnerability in Virustotal Yara, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2017-04-03.
How severe is CVE-2017-5923?
High severity. CVSS v3 base score is 7.5 out of 10.