Security readout for executives and security teams
Plain-English summary
Libelfin v0.3 can crash when parsing a specially crafted ELF file. The business impact is denial of service for software that uses this library on untrusted binaries. The supplied sources do not show data theft, code execution, or active exploitation.
Executive priority
Treat this as a targeted availability risk, not a broad enterprise emergency. Prioritize teams that process untrusted binaries or operate security, debugging, or build-analysis tooling dependent on Libelfin v0.3.
Technical view
The flaw is in dwarf::cursor::skip_form in Libelfin v0.3. A crafted ELF file can trigger a segmentation fault while DWARF data is parsed, causing process termination. The source bundle provides no CVSS, CWE, CPE, or confirmed patch details.
Likely exposure
Exposure is most likely in internal tools, analysis pipelines, or services that use Libelfin v0.3 to parse ELF or DWARF content, especially when files come from users, partners, malware samples, CI artifacts, or other untrusted sources.
Exploitation context
The CVE describes attacker-triggered denial of service through a crafted ELF file. KEV is false, and the supplied sources do not support claims of active exploitation. Evidence is limited to public vulnerability records and GitHub references.
Researcher notes
The source bundle is sparse: no CVSS vector, CWE, affected CPEs, or patch reference is provided. Analysis should stay scoped to Libelfin v0.3 and denial of service unless additional vendor evidence is obtained.
Mitigation direction
- Inventory use of Libelfin and confirm whether v0.3 is present.
- Check the upstream project or package maintainer for fixed versions or guidance.
- Avoid parsing untrusted ELF files with affected Libelfin builds.
- Run ELF parsing workflows in isolated, restartable, least-privilege processes.
- Add crash monitoring around binary-analysis pipelines using Libelfin.
Validation and detection
- Search dependency inventories and build manifests for Libelfin v0.3.
- Identify workflows that pass external ELF or DWARF files to Libelfin.
- Review crash reports for segmentation faults in dwarf::cursor::skip_form.
- Confirm vendor or maintainer guidance before marking remediation complete.
- Verify affected tooling handles malformed ELF files without service-wide outage.
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-2020-24827 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://github.com/aclements/libelfin/issues/47CVE reference · x_refsource_MISC
- https://github.com/xiaoxiongwang/function_bugs/tree/master/libelfin#segv-in-function-dwarfcursorskip_form-at-dwarfcursorcc181CVE 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.