Security readout for executives and security teams
Plain-English summary
CVE-2018-8102 is a crash vulnerability in xpdf 4.00. A malformed PDF can cause a buffer over-read and application crash, demonstrated with pdftohtml. The public record does not show data theft, code execution, or active exploitation.
Executive priority
Treat this as a targeted availability risk, not a confirmed breach risk. Priority should rise if business processes depend on automated handling of untrusted PDFs or if crashes could disrupt customer-facing services.
Technical view
The issue is in JBIG2MMRDecoder::getBlackCode in JBIG2Stream.cc in xpdf 4.00. Processing a specific PDF can trigger a buffer over-read, resulting in denial of service. No CVSS, CWE, patch version, or downstream affected product list is provided in the source bundle.
Likely exposure
Exposure is most likely where xpdf 4.00 or bundled xpdf utilities process untrusted PDF files, especially automated conversion workflows using pdftohtml. Downstream package exposure is not identified in the provided sources.
Exploitation context
The source bundle describes a denial-of-service condition via a specific PDF file. It does not cite public exploit availability, active exploitation, or CISA KEV listing. KEV is false in the provided record.
Researcher notes
Evidence is sparse. The CVE identifies the vulnerable function, component, version, impact, and demonstration tool, but lacks CVSS, CWE, root-cause detail, patch metadata, and affected downstream products. Avoid extending scope beyond xpdf 4.00 without separate evidence.
Mitigation direction
- Inventory systems and applications using xpdf 4.00 or embedded xpdf code.
- Check xpdf vendor guidance for fixed versions or recommended workarounds.
- Restrict automated PDF processing to trusted sources where feasible.
- Run PDF conversion tools with resource limits and process isolation.
- Prioritize remediation for internet-facing or customer-upload PDF workflows.
Validation and detection
- Confirm installed xpdf and pdftohtml versions on affected hosts.
- Identify services that automatically parse uploaded or emailed PDFs.
- Review crash logs for pdftohtml or xpdf failures during PDF processing.
- Check software bills of materials for embedded xpdf 4.00 components.
- Verify vendor advisories before declaring a fixed state.
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-2018-8102 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://forum.xpdfreader.com/viewtopic.php?f=3&t=652CVE 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.