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.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.025 (84.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 84.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.025 · newest: 0.025 · change: 0.000
Affected products
- Virustotal Yara — versions 3.5.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/VirusTotal/yara/issues/674 (Patch, Issue Tracking)
- github.com/VirusTotal/yara/commit/10e8bd3071677dd1fa76beeef4bc2fc427cea5e7 (Patch)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
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.