Security readout for executives and security teams
Plain-English summary
CVE-2020-23320 concerns JerryScript 2.2.0, where parsing certain function arguments can trigger an internal assertion. The public record does not provide severity, CVSS, CWE, confirmed impact, or a named fix. Business urgency depends on whether JerryScript 2.2.0 is present and exposed to untrusted JavaScript input.
Executive priority
Treat this as an exposure-discovery item, not an emergency, unless JerryScript 2.2.0 processes untrusted JavaScript in a sensitive product. Escalate once vendor guidance or internal validation confirms impact.
Technical view
The reported condition is an assertion failure involving `context_p->next_scanner_info_p->type == SCANNER_TYPE_FUNCTION` in `parser_parse_function_arguments` in JerryScript 2.2.0. Available sources do not establish memory corruption, code execution, exploitability, affected downstream products, or remediation details.
Likely exposure
Exposure is most likely limited to systems, firmware, applications, or embedded runtimes that include JerryScript 2.2.0 and parse JavaScript. The source bundle lists no CPEs, downstream vendors, or affected product families.
Exploitation context
CISA KEV status is false in the supplied data, and the provided sources do not claim active exploitation. A public GitHub issue exists, but the bundle does not include exploit status, weaponization evidence, or real-world attack reports.
Researcher notes
Evidence is sparse. The CVE identifies a parser assertion in JerryScript 2.2.0, but the bundle lacks CVSS, CWE, patch status, proof of exploitability, and downstream product mapping. Avoid assuming impact beyond assertion-triggered failure without additional vendor or code analysis.
Mitigation direction
- Inventory applications and firmware for JerryScript 2.2.0 usage.
- Check JerryScript upstream guidance and release notes for remediation status.
- Ask downstream vendors whether their products include the affected version.
- Prioritize controls where untrusted JavaScript reaches JerryScript parsing paths.
Validation and detection
- Confirm the exact JerryScript version in builds and shipped artifacts.
- Map whether JavaScript input is user-controlled or externally supplied.
- Review upstream issue 3835 for vendor discussion and resolution clues.
- Document any compensating controls around JavaScript ingestion and parsing.
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-2020-23320 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://github.com/jerryscript-project/jerryscript/issues/3835CVE 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.