Security readout for executives and security teams
Plain-English summary
CVE-2018-9304 is a denial-of-service flaw in Exiv2 0.26. If an application uses this library to inspect image metadata, certain BigTIFF processing can trigger a divide-by-zero crash. The available bundle does not show data theft, code execution, or confirmed active exploitation.
Executive priority
Prioritize remediation for internet-facing or automated image-processing services. The business risk is service interruption, not proven data compromise, based on the supplied evidence.
Technical view
The reported bug is a divide by zero in Exiv2 0.26, specifically BigTiffImage::printIFD in bigtiffimage.cpp. Impact is denial of service. The source bundle does not provide CVSS, CWE, fixed-version detail, or a complete affected-version matrix beyond Exiv2 0.26.
Likely exposure
Exposure is most likely where Exiv2 0.26 parses untrusted images or metadata, such as upload services, media pipelines, forensic tooling, desktop image tools, or packaged Linux applications. Products bundling Exiv2 need separate dependency review.
Exploitation context
The bundle includes a public PoC reference and an upstream issue, but KEV is false and no cited source states active exploitation. Treat this as a crashable parser bug with uncertain real-world exploit prevalence.
Researcher notes
Key gaps are missing CVSS, no CWE assignment, no explicit fixed version in the provided CVE data, and no KEV listing. Validate affectedness by dependency version and reachable BigTIFF metadata parsing, not by product name alone.
Mitigation direction
- Identify systems and applications using Exiv2 0.26.
- Apply vendor or distribution Exiv2 security updates.
- Review Gentoo GLSA-201811-14 if using Gentoo packages.
- Limit untrusted image processing until updates are applied.
- Prefer sandboxing for metadata parsers handling user-supplied files.
Validation and detection
- Inventory Exiv2 versions in hosts, containers, and application bundles.
- Check image upload and metadata extraction paths for Exiv2 usage.
- Confirm patched packages are installed from vendor repositories.
- Review crash logs for Exiv2 BigTIFF processing failures.
- Verify exposed services cannot be repeatedly crashed by malformed uploads.
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-2018-9304 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/xiaoqx/pocs/blob/master/exiv2/readme.mdCVE reference · x_refsource_MISC
- https://github.com/Exiv2/exiv2/issues/262CVE reference · x_refsource_MISC
- GLSA-201811-14CVE reference · vendor-advisory, x_refsource_GENTOO
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.