Vulnerability in Virustotal Yara
CVE-2017-9438
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.
EPSS: 0.026 (83.5th 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
- Virustotal Yara — versions 3.5.0
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (x_refsource_CONFIRM, Patch, Issue Tracking)
- cve@mitre.org (x_refsource_CONFIRM, Patch)
- cve@mitre.org (vendor-advisory, x_refsource_FEDORA)
- cve@mitre.org (vendor-advisory, x_refsource_FEDORA)
Frequently asked questions
- What is CVE-2017-9438?
- CVE-2017-9438 is a high-severity vulnerability in Virustotal Yara, classified under Uncontrolled Recursion. CVSS score: 7.5/10. Published 2017-06-05.
- How severe is CVE-2017-9438?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2017-9438 known to be exploited?
- 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.