Security readout for executives and security teams
Plain-English summary
A specially crafted Microsoft Word DOC file could cause Antenna House Office Server Document Converter to corrupt memory and potentially run attacker-controlled code. The impact is serious for services that convert uploaded or emailed DOC files, because compromise could affect confidentiality, integrity, and availability of the converter host.
Executive priority
Treat as high priority if the product processes external DOC files. The issue can lead to full compromise of the converter host, but the provided sources do not show confirmed active exploitation or name a specific patch.
Technical view
CVE-2018-3931 is an out-of-bounds write in the `putShapeProperty` method of Antenna House Office Server Document Converter V6.1 Pro MR2 for Linux64 build 6,1,2018,0312. The CVSS 3.0 score is 8.8, with network attack vector, low complexity, no privileges required, and user interaction required.
Likely exposure
Exposure is most likely where the affected Linux64 converter build processes Microsoft Word DOC files from customers, partners, email, web uploads, or automated document workflows. The provided data does not identify other affected versions or CPEs.
Exploitation context
The source bundle supports remote code execution through a crafted DOC file, but user interaction is required by the CVSS vector. There is no KEV listing and no cited source in the bundle confirms active exploitation in the wild.
Researcher notes
TALOS-2018-0598 is the key technical reference. The record names `putShapeProperty` and an out-of-bounds write leading to RCE. CVSS indicates AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. No CWE, CPEs, exploit-in-the-wild evidence, or fixed version is provided in the bundle.
Mitigation direction
- Inventory Antenna House Office Server Document Converter deployments and confirm exact build numbers.
- Check Antenna House guidance for fixed releases or supported workarounds.
- Stop processing untrusted DOC files with the affected build until remediated.
- Restrict conversion inputs to trusted sources and authenticated workflows.
- Run conversion services with least privilege and strong host isolation.
Validation and detection
- Confirm whether version V6.1 Pro MR2 Linux64 build 6,1,2018,0312 is installed.
- Identify workflows that submit DOC files to the converter.
- Review upload, email, and automation paths for untrusted DOC input.
- Verify vendor remediation status against Antenna House or Talos guidance.
- Check logs for crashes or abnormal converter behavior around DOC processing.
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.
Execution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2018-3931 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
- High
- CVSS
- 8.8 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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 vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
8.8HighVector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0598CVE reference · x_refsource_MISC
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.