Security readout for executives and security teams
Plain-English summary
CVE-2018-13443 describes a heap-based buffer overflow in EOS.IO jit-wasm 4.1 when handling a crafted WAST file. Business risk depends on whether the organization uses this specific component and processes WAST files from untrusted or semi-trusted sources. The public record supplied is sparse and does not state impact, severity, or a fixed version.
Executive priority
Treat this as an inventory-driven issue. It is not possible to rate business urgency from the supplied sources alone. Prioritize investigation if EOS.IO jit-wasm 4.1 is present in production, internet-facing workflows, CI pipelines, or systems that process externally supplied WAST files.
Technical view
The CVE description identifies a heap-based buffer overflow in EOS.IO jit-wasm 4.1 triggered by a crafted WAST file. No CVSS score, CWE mapping, affected CPE, exploit confirmation, or remediation version is included in the supplied bundle. The GitHub issue and EOSIO references are the main public leads for further validation.
Likely exposure
Exposure is most likely in systems using EOS.IO jit-wasm 4.1, especially where WAST files are compiled, validated, or otherwise processed. The source bundle does not identify broader EOS.IO versions, package names, deployment patterns, or CPEs, so exposure must be confirmed from local inventories and dependency records.
Exploitation context
The bundle does not show CISA KEV listing, active exploitation, public exploit availability, or real-world incidents. The known trigger condition is a crafted WAST file, but the supplied sources do not establish practical exploitability, resulting impact, or required privileges.
Researcher notes
Evidence is limited: no CVSS, CWE, CPEs, fixed release, exploit status, or detailed impact is provided. The GitHub issue is the most specific reference, but the bundle only supports the statement that EOS.IO jit-wasm 4.1 has a heap-based buffer overflow via crafted WAST input.
Mitigation direction
- Check EOSIO vendor and GitHub guidance for fixed versions or workarounds.
- Identify and upgrade or remove EOS.IO jit-wasm 4.1 where present.
- Restrict WAST file processing to trusted sources until exposure is resolved.
- Isolate services that process WAST files from sensitive systems.
- Monitor for abnormal crashes in EOS.IO WAST processing paths.
Validation and detection
- Search asset and dependency inventories for EOS.IO jit-wasm 4.1.
- Review applications that accept, compile, or validate WAST files.
- Check container images and build manifests for EOSIO components.
- Confirm whether any WAST input originates from users or partners.
- Review the linked GitHub issue for version-specific remediation context.
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-2018-13443 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://hackerone.com/eosioCVE reference · x_refsource_MISC
- https://github.com/EOSIO/eosCVE reference · x_refsource_MISC
- https://github.com/EOSIO/eos/issues/6585CVE 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.