Security readout for executives and security teams
Plain-English summary
CVE-2020-23312 is an assertion failure in JerryScript 2.2.0's JavaScript parser. The public record does not provide severity, CVSS, affected package metadata, or impact detail. Treat it as a parser stability issue until vendor evidence shows confidentiality, integrity, or remote exploitability impact.
Executive priority
Do not treat this as a confirmed emergency from the available evidence. Assign vulnerability-management review if JerryScript appears in products, embedded devices, or services that process untrusted JavaScript.
Technical view
The CVE describes a failed assertion: context.status_flags & PARSER_SCANNING_SUCCESSFUL at js-parser.c:2185 in parser_parse_source. The only named component is JerryScript 2.2.0. The records do not identify a CWE, root cause, reachable input boundary, crash consequences, fixed version, or patch commit.
Likely exposure
Exposure is likely limited to systems that embed or execute JerryScript 2.2.0 and parse untrusted JavaScript. The structured affected-product data is empty, so inventory confirmation is required.
Exploitation context
The CVE is not listed as CISA KEV in the provided bundle, and no cited source states active exploitation. Public evidence supports a parser assertion failure report, not weaponized exploitation.
Researcher notes
Evidence is thin: no CVSS, CWE, fixed version, patch reference, or exploit status is provided. The key research task is determining reachability and impact in real embeddings of JerryScript 2.2.0.
Mitigation direction
- Identify whether any product or firmware embeds JerryScript 2.2.0.
- Check JerryScript project guidance and release notes for a fixed version.
- Avoid parsing untrusted JavaScript with affected builds where practical.
- Prioritize updates for internet-facing or attacker-controlled script inputs.
Validation and detection
- Search software bills of materials for JerryScript and version 2.2.0.
- Confirm whether JavaScript input can be controlled by untrusted users.
- Review crash logs for parser assertion failures referencing js-parser.c.
- Track the GitHub issue for maintainer-confirmed fixes or closure details.
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-2020-23312 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/jerryscript-project/jerryscript/issues/3824CVE reference · x_refsource_CONFIRM
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.