Security readout for executives and security teams
Plain-English summary
This CVE describes a denial-of-service risk in ezXML 0.8.3 through 0.8.6. A specially crafted XML file can drive excessive recursion and stack consumption, potentially crashing software that parses it. Business impact depends on whether any application accepts untrusted XML through this library.
Executive priority
Prioritize discovery first. Escalate remediation if ezXML handles public or partner-supplied XML in production services, because the plausible impact is service disruption. Lower urgency if the library is absent or only parses trusted local data.
Technical view
The vulnerable function is ezxml_ent_ok(). The CVE says it mishandles recursion when processing a crafted XML file, causing stack consumption. No CVSS score, CWE, affected CPEs, active exploitation, or confirmed fixed version is provided in the source bundle.
Likely exposure
Exposure is likely limited to systems that embed ezXML 0.8.3 through 0.8.6 and parse XML from users, partners, files, messages, or network inputs. The source bundle does not identify downstream products or package ecosystems.
Exploitation context
The provided sources support a crafted XML denial-of-service scenario, not data theft or code execution. There is no KEV listing and no cited evidence of active exploitation in the provided bundle.
Researcher notes
Evidence is sparse: the CVE description names recursion mishandling and stack consumption, but does not provide CVSS, CWE, affected CPEs, exploit maturity, or a fixed release. Avoid assuming broader impact beyond denial of service unless new vendor evidence appears.
Mitigation direction
- Inventory applications and libraries for ezXML 0.8.3 through 0.8.6 usage.
- Check ezXML project or vendor guidance for any fixed version or patch.
- Restrict untrusted XML parsing where ezXML is present.
- Apply upstream input size, entity, and nesting limits where supported.
- Monitor services using ezXML for crashes during XML processing.
Validation and detection
- Confirm whether ezXML is bundled statically or vendored in application source.
- Identify XML input paths that reach ezxml_ent_ok() or ezXML parsing.
- Review crash logs for stack exhaustion during XML processing.
- Test parser hardening with safe non-production regression cases.
- Document whether exposed XML inputs are authenticated or public.
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-2019-20198 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://sourceforge.net/p/ezxml/bugs/20/CVE 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.