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CVE Record

CVE-2019-19630: HTMLDOC 1.9.7 allows a stack-based buffer overflow in the hd_strlcpy() function in string.c (when called fr...

HTMLDOC 1.9.7 allows a stack-based buffer overflow in the hd_strlcpy() function in string.c (when called from render_contents in ps-pdf.cxx) via a crafted HTML document.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

HTMLDOC 1.9.7 can mishandle a specially crafted HTML document while generating output, triggering a stack-based buffer overflow. The public record does not provide CVSS scoring or evidence of active exploitation. Business urgency depends on whether HTMLDOC processes HTML from users, customers, email, or other untrusted sources.

Executive priority

Prioritize remediation where HTMLDOC handles external documents or powers automated conversion services. This is less urgent for isolated internal-only use, but should still be patched through normal maintenance because the flaw is memory-corruption in a document parser.

Technical view

CVE-2019-19630 is a stack-based buffer overflow in HTMLDOC 1.9.7. The vulnerable path is hd_strlcpy() in string.c when called from render_contents in ps-pdf.cxx during handling of crafted HTML. Public sources identify Debian and Fedora security updates, but the bundle does not include CVSS, CWE, or upstream fixed-version details.

Likely exposure

Most likely exposure is servers, desktop systems, or automation pipelines using HTMLDOC to convert HTML into PDF or PostScript, especially where HTML input is externally supplied or weakly trusted. Systems not running HTMLDOC, or using it only on controlled internal content, have lower practical exposure.

Exploitation context

The source bundle supports exploitation by a crafted HTML document, but does not cite public exploitation in the wild. The CVE is not listed as KEV in the provided data. Treat internet-facing or document-ingestion workflows as the highest concern because attacker-controlled input is the trigger.

Researcher notes

The public bundle is sparse: no CVSS, CWE, CPE, or detailed fixed upstream release is provided. Debian and Fedora advisories confirm security updates existed. Analysis should avoid assuming remote code execution unless a vendor advisory or reproducible research source explicitly supports that conclusion.

Mitigation direction

  • Update HTMLDOC through the relevant Debian, Fedora, or vendor security channel.
  • Check upstream HTMLDOC guidance for the exact fixed release before manual builds.
  • Restrict HTMLDOC from processing untrusted HTML until patched.
  • Run HTMLDOC with least privilege in isolated conversion workflows.
  • Review document conversion services for direct user-upload exposure.

Validation and detection

  • Inventory hosts and containers for installed HTMLDOC packages and versions.
  • Confirm whether version 1.9.7 is present in production or build images.
  • Map all workflows where HTMLDOC processes user-supplied or third-party HTML.
  • Verify Debian or Fedora security updates are applied where applicable.
  • Check logs for crashes during HTMLDOC processing of uploaded HTML.
Prepared
Confidence
medium
Sources
7

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

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.

0CVSS vectors
0Timeline events
0ADP providers
6Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.