Security readout for executives and security teams
Plain-English summary
CVE-2020-24822 is a denial-of-service flaw in Libelfin v0.3. A specially crafted ELF file can make the library crash with a segmentation fault. Business impact is mainly service or tool interruption where Libelfin processes untrusted binaries.
Executive priority
Prioritize this for teams running binary-analysis, debugging, or artifact-processing services. It is not proven actively exploited, but untrusted file parsing can create reliable outages in exposed workflows.
Technical view
The reported crash is in dwarf::cursor::uleb, also referenced as uleb128 handling, during DWARF/ELF parsing. Sources identify Libelfin v0.3 and a crafted ELF trigger, but provide no CVSS score, CWE, affected CPEs, or confirmed fixed version.
Likely exposure
Exposure is most likely in applications, analysis pipelines, or security tooling that embed Libelfin v0.3 and parse ELF files from users, build artifacts, malware samples, or other untrusted sources.
Exploitation context
The public evidence describes a crafted ELF file causing a segmentation fault. CISA KEV is false in the bundle, and no cited source claims active exploitation, remote code execution, or privilege escalation.
Researcher notes
Evidence is sparse: the CVE description and references establish a Libelfin v0.3 crash path, but not exploitability beyond denial of service. Do not assume broader product impact without dependency confirmation.
Mitigation direction
- Inventory software that embeds or packages Libelfin v0.3.
- Avoid parsing untrusted ELF files in privileged or shared processes.
- Isolate binary-analysis jobs with sandboxing and resource limits.
- Check upstream or vendor guidance for a confirmed fixed version.
- Treat recurring parser crashes as security-relevant operational events.
Validation and detection
- Confirm whether Libelfin v0.3 exists in source, packages, or vendor components.
- Identify workflows that accept externally supplied ELF files.
- Review crash logs for segmentation faults in DWARF cursor parsing.
- Track the referenced GitHub issue for resolution evidence.
- Document compensating controls where upgrade status is unclear.
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-2020-24822 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/50CVE reference · x_refsource_MISC
- https://github.com/xiaoxiongwang/function_bugs/tree/master/libelfin#segv-in-function-dwarfcursoruleb128-at-dwarfinternalhh154CVE 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.