Security readout for executives and security teams
Plain-English summary
This CVE describes a crash bug in NASM, an assembler used in software build workflows. A specially crafted NASM input file can trigger endless macro generation and cause the program to crash. The public data does not provide a CVSS score, confirmed fix, or evidence of active exploitation.
Executive priority
Treat this as a build-chain reliability and exposure-control issue. Prioritize environments that compile untrusted or external assembler sources, but do not assume active exploitation or broader compromise from the available evidence.
Technical view
NASM versions 2.14.01rc5 and 2.15 are reported affected by a buffer overflow in asm/stdscan.c around line 130. The described impact is stack overflow and process crash when parsing crafted input that triggers unbounded macro generation. Evidence is limited to the CVE record and referenced NASM Bugzilla issue.
Likely exposure
Exposure is most likely in build systems, developer workstations, CI jobs, or packaging pipelines that run the affected NASM versions on untrusted or third-party assembler source files.
Exploitation context
The CVE states exploitation appears possible through a crafted NASM input file. The source bundle does not show public exploitation, KEV listing, privilege impact, code execution, or real-world attack use.
Researcher notes
The public record is sparse: no CVSS, CWE, CPE, or named fixed version is included in the bundle. The reported impact is denial of service through NASM crash, not confirmed code execution. Validation should focus on version presence and input trust boundaries.
Mitigation direction
- Inventory NASM versions on developer, CI, and packaging systems.
- Avoid processing untrusted NASM input files with affected versions.
- Check NASM Bugzilla and vendor guidance for fixed releases or patches.
- Run assembler workloads in isolated build environments where practical.
- Update NASM when a vendor-confirmed fix is available.
Validation and detection
- Confirm whether NASM 2.14.01rc5 or 2.15 is installed.
- Review CI and build pipelines for NASM invocation.
- Identify whether external assembler sources are accepted or built.
- Check recent build logs for unexpected NASM crashes.
- Verify remediation against vendor advisory or release notes.
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-2018-1000886 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://bugzilla.nasm.us/show_bug.cgi?id=3392514CVE 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.