Security readout for executives and security teams
Plain-English summary
This flaw can crash YARA 3.x when it scans a specially crafted .NET file. For organizations using YARA in malware analysis, email security, EDR workflows, or file intake pipelines, the main business risk is loss of scanning availability rather than confirmed data theft or code execution.
Executive priority
Prioritize based on dependency presence. If YARA 3.x is used in production security pipelines that scan untrusted files, schedule remediation because scanner outages can reduce detection coverage. If YARA is absent or isolated in lab-only workflows, urgency is lower.
Technical view
CVE-2017-11328 is a heap buffer overflow in YARA 3.x, specifically yr_object_array_set_item() in object.c. The cited description states it allows denial of service while scanning a crafted .NET file. The source bundle does not provide CVSS, CWE, affected minor versions, or a fixed release number.
Likely exposure
Exposure is most likely where YARA 3.x scans untrusted or externally supplied .NET files. The bundle lists affected vendor/product as unavailable, so confirm use by software inventory, security tooling manifests, and embedded scanner dependencies.
Exploitation context
The provided sources describe denial of service from scanning a crafted .NET file. CISA KEV is false in the bundle, and no cited source states active exploitation. Do not treat this as exploited-in-the-wild based on the available evidence.
Researcher notes
The evidence supports a heap buffer overflow leading to denial of service in YARA 3.x during crafted .NET scanning. The bundle lacks CVSS, precise affected version ranges, proof of active exploitation, and fixed release metadata, so version mapping requires vendor changelog or package review.
Mitigation direction
- Identify all direct and embedded YARA 3.x deployments.
- Review the referenced YARA commit and vendor release notes for fixed builds.
- Upgrade to a vendor-supported release containing the fix.
- Limit untrusted .NET file scanning on vulnerable systems until remediated.
- Monitor scanner crashes or repeated failures during .NET file analysis.
Validation and detection
- Confirm deployed YARA versions and embedded library versions.
- Check whether scanners process externally supplied .NET files.
- Verify the deployed source or package includes the referenced fix.
- Review crash logs for YARA failures during .NET parsing.
- Document compensating controls if upgrade timing is delayed.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2017-11328 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/VirusTotal/yara/commit/4a342f01e5439b9bb901aff1c6c23c536baeeb3fCVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.