Security readout for executives and security teams
Plain-English summary
This affects Rust software that uses the abox crate before 0.4.1. The crate incorrectly marks AtomicBox<T> as safe to share or move across threads for all contained types, even when the contained type is not thread-safe. That can undermine Rust's normal safety guarantees in affected applications.
Executive priority
Treat as a targeted dependency risk, not an internet-wide emergency. Prioritize remediation where Rust services use abox in production, especially in concurrent or security-sensitive components.
Technical view
AtomicBox<T> implemented Send and Sync without requiring T: Send and T: Sync. In Rust, those bounds are needed to prevent non-thread-safe values from crossing thread boundaries. The flaw is an unsound trait implementation in abox versions before 0.4.1.
Likely exposure
Exposure is limited to Rust applications or libraries that directly or transitively depend on abox versions before 0.4.1. The provided CVE data does not identify broader products, packaged applications, or CPEs.
Exploitation context
The source bundle does not show active exploitation, KEV listing, public exploit status, CVSS scoring, or specific attack prerequisites. Practical impact depends on whether affected code uses AtomicBox<T> with non-thread-safe types in concurrent contexts.
Researcher notes
Evidence points to Rust soundness risk from incorrect auto-trait guarantees. The public sources do not provide exploit details, affected downstream products, CWE mapping, or CVSS. Assess impact by dependency reachability and concurrent use of AtomicBox<T>.
Mitigation direction
- Upgrade abox to version 0.4.1 or later.
- Rebuild and redeploy software that includes the vulnerable dependency.
- Check vendor or project guidance for any application-specific remediation.
- If upgrade is blocked, avoid sharing AtomicBox with non-thread-safe contained types.
Validation and detection
- Review dependency manifests and lockfiles for abox versions below 0.4.1.
- Use a Rust dependency scanner that consumes RustSec advisories.
- Identify direct and transitive consumers of abox in affected repositories.
- Review concurrent AtomicBox usage involving types that are not Send or Sync.
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-2020-36441 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://rustsec.org/advisories/RUSTSEC-2020-0121.htmlCVE reference · x_refsource_MISC
- https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/abox/RUSTSEC-2020-0121.mdCVE 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.