Security readout for executives and security teams
Plain-English summary
CVE-2018-8976 is a denial-of-service issue in Exiv2 0.26, a library used to read image metadata. A crafted file can make affected parsing code read outside expected memory and crash the processing application.
Executive priority
Treat as a moderate availability risk, especially for public file-upload or media-processing services. Prioritize patch verification in exposed workflows, but do not treat it as confirmed active exploitation based on the provided evidence.
Technical view
The source bundle describes an out-of-bounds read in Exiv2 0.26 involving jpgimage.cpp and Exiv2::Internal::stringFormat in image.cpp. The trigger is a crafted file, with impact described as denial of service. No CVSS, CWE, or complete affected-version matrix is provided.
Likely exposure
Exposure is most likely where Exiv2 0.26, or distribution packages based on affected Exiv2 code, process untrusted JPEG or image files. Internet-facing upload, media-processing, DAM, CMS, and thumbnailing workflows deserve review.
Exploitation context
The sources support remote denial of service via crafted file processing. The bundle marks KEV as false, and no provided source states active exploitation. Evidence is insufficient to claim broader compromise, code execution, or weaponized exploitation.
Researcher notes
Key evidence is narrow: Exiv2 0.26, crafted file, out-of-bounds read, denial of service. The source bundle does not provide CVSS, CWE, exploit status, or a complete affected-version range, so validation should focus on package provenance and vendor advisories.
Mitigation direction
- Apply relevant Exiv2 security updates from your OS or software vendor.
- Check Gentoo, Red Hat, Debian, or upstream Exiv2 guidance for fixed package versions.
- Reduce exposure of image metadata parsing to untrusted files where operationally possible.
- Run image-processing services with least privilege and process isolation.
Validation and detection
- Inventory systems and containers with Exiv2 or libexiv2 installed.
- Confirm whether Exiv2 0.26 or vulnerable distro builds are present.
- Map applications that parse uploaded or externally supplied image files.
- Verify vendor security updates are installed on affected hosts.
- Review crash logs for image-processing services handling untrusted files.
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-2018-8976 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/Exiv2/exiv2/issues/246CVE reference
- GLSA-201811-14CVE reference · vendor-advisory
- RHSA-2019:2101CVE reference · vendor-advisory
- [debian-lts-announce] 20230110 [SECURITY] [DLA 3265-1] exiv2 security updateCVE reference · mailing-list
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.