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Uncontrolled Recursion Affecting yara package, versions <3.6.1+dfsg-1

Severity

 Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
2.55% (85th percentile)

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  • Snyk IDSNYK-ECHOLATEST-YARA-20079372
  • published24 Sept 2026
  • disclosed5 Jun 2017
Report a new vulnerability Found a mistake?

Introduced: 5 Jun 2017

CVE-2017-9438  (opens in a new tab)
CWE-674  (opens in a new tab)

How to fix?

Upgrade Echo:latest yara to version 3.6.1+dfsg-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream yara package and not the yara package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

libyara/re.c in the regexp module in YARA 3.5.0 allows remote attackers to cause a denial of service (stack consumption) via a crafted rule (involving hex strings) that is mishandled in the _yr_re_emit function, a different vulnerability than CVE-2017-9304.