Security readout for executives and security teams
Plain-English summary
CVE-2020-18898 is a denial-of-service issue in Exiv2 0.27. A crafted file can exhaust the stack while metadata structures are printed, potentially crashing the process that handles the file. Business urgency depends on whether Exiv2 processes untrusted uploaded or received media.
Executive priority
Prioritize if Exiv2 handles customer-supplied files in internet-facing workflows, because a crafted file could disrupt service availability. If Exiv2 is only used internally on trusted files, handle through normal dependency maintenance.
Technical view
The CVE describes stack exhaustion in Exiv2 0.27's printIFDStructure function, reachable through a crafted file. The supplied CWE reference is uncontrolled recursion. Sources do not provide CVSS, vendor patch details, or broader affected-version data beyond Exiv2 0.27.
Likely exposure
Exposure is most likely in applications, services, or operational tooling that use Exiv2 0.27 to inspect metadata from untrusted image or media files. The source bundle does not identify downstream affected products or package names.
Exploitation context
The CVE description says remote attackers can cause denial of service with a crafted file. The bundle marks KEV as false and provides no cited evidence of active exploitation.
Researcher notes
Evidence is limited. The record names Exiv2 0.27 and printIFDStructure but does not include CVSS, patch metadata, or a complete affected-version range. Avoid assuming impact beyond process denial of service unless additional vendor information confirms it.
Mitigation direction
- Inventory direct and bundled Exiv2 usage, especially version 0.27.
- Check current Exiv2 vendor guidance for fixed versions or recommended workarounds.
- Limit Exiv2 processing of untrusted files where business workflows allow.
- Run file-processing services with resource limits and crash isolation.
- Prioritize externally reachable upload and intake paths first.
Validation and detection
- Confirm whether Exiv2 0.27 is present in production or build images.
- Identify services that pass user-supplied files to Exiv2 metadata parsing.
- Review crash logs for Exiv2 failures during metadata inspection.
- Verify compensating controls for uploaded or emailed media files.
- Document any vendor advisory or upgrade decision found during review.
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-2020-18898 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/Exiv2/exiv2/issues/741CVE reference · x_refsource_MISC
- https://cwe.mitre.org/data/definitions/674.htmlCVE 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.