Security readout for executives and security teams
Plain-English summary
This CVE describes a crash in Netwide Assembler 2.15rc10 when handling certain preprocessing text. The documented impact is a segmentation fault, so the business concern is disruption to build or analysis systems that process untrusted assembly input. The source bundle does not provide severity, CVSS, affected supported versions, or a confirmed fix.
Executive priority
Prioritize this where NASM is exposed to untrusted build inputs or shared CI infrastructure. For ordinary internal-only developer use, urgency is lower but still worth tracking because the patch status is unclear in the provided evidence.
Technical view
NASM 2.15rc10 can trigger a SEGV in tok_text in asm/preproc.c through READ memory access. The available CVE metadata does not identify a CWE, CVSS vector, exploit maturity, patch version, or broader affected-version range. Treat this as a source-validated crash bug with incomplete remediation evidence.
Likely exposure
Exposure appears limited to environments using NASM 2.15rc10, especially CI, build farms, sandboxes, or developer tools that process externally supplied assembly or preprocessor input. The source bundle does not prove impact to other NASM versions or products.
Exploitation context
The bundle does not support active exploitation, and the CVE is not listed as KEV. Evidence supports a crash condition, not code execution. Practical risk depends on whether attackers can supply files to a NASM preprocessing or assembly workflow.
Researcher notes
Do not assume code execution or broad version impact from the supplied CVE data. Key missing items are CVSS, CWE, fixed release, reproducibility details, and affected-version range. Validation should stay focused on version inventory, input trust boundaries, and vendor guidance.
Mitigation direction
- Inventory systems and build images for NASM 2.15rc10.
- Avoid processing untrusted assembly inputs with affected tooling.
- Check NASM Bugzilla and release notes for vendor-confirmed fixed versions.
- Isolate CI or build workers that compile externally supplied code.
- Monitor build logs for repeated NASM segmentation faults or abnormal exits.
Validation and detection
- Confirm installed NASM versions on developer, CI, and build hosts.
- Map workflows where NASM handles external or user-submitted source files.
- Review the referenced NASM Bugzilla issue for confirmed affected conditions.
- Check whether failures align with NASM preprocessing crashes.
- Document whether compensating isolation exists around build execution.
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-2020-24242 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=3392708CVE 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.