Use After Free in Virustotal Yara
CVE-2017-5924
libyara/grammar.y in YARA 3.5.0 allows remote attackers to cause a denial of service (use-after-free and application crash) via a crafted rule that is mishandled in the yr_compiler_destroy function.
Vulnerability class: Use-After-Free
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: 0.016 (74.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 74.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000
Affected products
- Virustotal Yara — versions 3.5.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/VirusTotal/yara/commit/7f02eca670f29c00a1d2c305e96febae6ce5d37b (Patch, Vendor Advisory)
- www.securityfocus.com/bid/98075 (vdb-entry)
- github.com/VirusTotal/yara/issues/593 (Exploit, Patch, Issue Tracking)
Frequently asked questions
- What is CVE-2017-5924?
- CVE-2017-5924 is a high-severity vulnerability in Virustotal Yara, classified under Use After Free. CVSS score: 7.5/10. Published 2017-04-03.
- How severe is CVE-2017-5924?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2017-5924 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.