Security readout for executives and security teams
Plain-English summary
CVE-2020-19724 is a denial-of-service issue in GNU nm before version 2.34. A crafted command can trigger excessive memory consumption, potentially disrupting build, analysis, or security tooling that invokes nm on untrusted inputs.
Executive priority
Prioritize remediation for systems that process untrusted binaries automatically. The business risk is availability impact to developer, CI, or analysis infrastructure, with urgency reduced by sparse severity data and no cited exploitation evidence.
Technical view
The issue is described as memory consumption in the get_data function in binutils/nm.c. The public record names GNU nm before 2.34 and references a Sourceware bug and binutils-gdb commit. No CVSS score, CWE, detailed affected package list, or exploit confirmation is provided.
Likely exposure
Exposure is most likely where GNU nm before 2.34 is installed and callable in automated workflows, developer systems, CI pipelines, malware analysis, or file inspection services handling untrusted artifacts.
Exploitation context
The source bundle does not show active exploitation, KEV listing, public exploit status, or technical reproduction details. Treat this as a resource-exhaustion risk against tooling rather than confirmed remote system compromise.
Researcher notes
Evidence is limited to the CVE description and upstream Sourceware references. The record identifies get_data in binutils/nm.c and GNU nm before 2.34, but does not provide CVSS, CWE classification, exploit telemetry, or distribution-specific affected versions.
Mitigation direction
- Inventory binutils/GNU nm versions and identify installations older than 2.34.
- Update binutils/GNU nm to 2.34 or later where available.
- Check operating system vendor advisories for backported fixes.
- Restrict automated nm use to trusted inputs until fixed.
- Apply resource limits around binary analysis jobs where practical.
Validation and detection
- Check installed binutils or nm package versions against 2.34.
- Review CI and analysis pipelines for nm execution on untrusted inputs.
- Confirm vendor packages include the referenced upstream fix or backport.
- Monitor logs for abnormal memory exhaustion during nm runs.
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-2020-19724 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
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.