Security readout for executives and security teams
Plain-English summary
CVE-2020-36467 is a Rust memory-safety issue in the cgc crate through 2020-12-10. Ptr::get can return multiple mutable references to the same object, breaking Rust’s aliasing guarantees. Public sources do not provide CVSS, fixed-version, or exploitation evidence.
Executive priority
Treat this as a targeted dependency hygiene issue, not a broad emergency. Ask engineering to confirm whether cgc is present. Escalate if it appears in production services, especially services processing untrusted input or sensitive data.
Technical view
The flaw is an unsound API behavior: Ptr::get may create more than one mutable reference to the same object. In Rust, that can lead to undefined behavior in dependent code. The source bundle names the cgc crate and date boundary, but not precise package versions, CWE, or remediation details.
Likely exposure
Exposure is likely limited to Rust projects that directly or transitively depend on the cgc crate as it existed through 2020-12-10. The source bundle does not identify broader products, platforms, or CPEs.
Exploitation context
No active exploitation is stated in the provided sources, and the CVE is not marked as KEV. The available evidence describes a memory-safety defect, not a public exploit or operational attack pattern.
Researcher notes
Evidence is sparse: no CVSS, CWE, CPE, fixed version, or exploit reference is included. Analysis should stay scoped to the Rust cgc crate advisory and the Ptr::get mutable-aliasing behavior described by CVE and RustSec sources.
Mitigation direction
- Inventory Rust projects for direct or transitive cgc crate usage.
- Check RustSec and crate maintainer guidance for a fixed or recommended replacement version.
- If no supported fix is available, remove or replace the dependency where feasible.
- Prioritize applications where cgc handles sensitive data or untrusted inputs.
Validation and detection
- Review dependency manifests and lockfiles for the cgc crate.
- Confirm whether any dependency version maps to the advisory date boundary.
- Assess call paths that use Ptr::get or expose affected behavior.
- Document findings even if no affected dependency is present.
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
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CVE-2020-36467 mapping review
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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-2020-0148.htmlCVE reference · x_refsource_MISC
- https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/cgc/RUSTSEC-2020-0148.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.