Security readout for executives and security teams
Plain-English summary
CVE-2020-36461 concerns a Rust library, noise_search, marking an internal lock type as safe to send and share between threads without conditions. That can undermine Rust’s normal thread-safety guarantees. The public bundle does not provide CVSS, a fixed version, or evidence of active exploitation.
Executive priority
Treat this as a targeted dependency-risk review, not an emergency, unless the organization ships Rust software using noise_search in concurrent code. Prioritize confirming dependency presence and whether a maintained fix or replacement exists.
Technical view
The issue is in the noise_search crate through 2020-12-10. MvccRwLock has unconditional Send and Sync implementations, meaning Rust may treat values as thread-safe regardless of the contained type. This is a correctness and memory-safety concern for applications that depend on the crate and use that lock across threads.
Likely exposure
Exposure is likely limited to Rust applications that directly or transitively depend on noise_search versions covered by the advisory, especially where MvccRwLock is used in concurrent code. The CVE record does not identify broader vendor products or CPEs.
Exploitation context
The provided sources do not show active exploitation, and the CVE is not listed as KEV in the bundle. No public exploit details are included. Risk depends on dependency presence and whether the affected lock is reachable in threaded execution paths.
Researcher notes
The source evidence is narrow: unconditional Send and Sync for MvccRwLock, no CVSS, no CWE, no CPEs, and no fixed version in the supplied bundle. Analysis should stay focused on dependency reachability and Rust thread-safety implications.
Mitigation direction
- Inventory Rust projects for direct or transitive noise_search dependency use.
- Check RustSec and project guidance for a fixed or recommended replacement version.
- Avoid using MvccRwLock across threads until vendor guidance is confirmed.
- Remove or replace the crate if no maintained safe version is available.
Validation and detection
- Review Cargo manifests and lockfiles for noise_search entries.
- Map affected dependency versions against RUSTSEC-2020-0141.
- Inspect application code for MvccRwLock use in threaded contexts.
- Document whether the dependency is reachable in production builds.
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-2020-36461 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-2020-0141.htmlCVE reference · x_refsource_MISC
- https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/noise_search/RUSTSEC-2020-0141.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.