Security readout for executives and security teams
Plain-English summary
CVE-2023-34872 is a crash vulnerability in Poppler, a PDF rendering library. A crafted PDF can trigger a denial of service in OutlineItem::open. The record describes availability impact only, not data theft or code execution. User interaction is required because a PDF must be processed or opened.
Executive priority
Treat this as a reliability and service availability issue, not a confidentiality breach based on current evidence. Prioritize patching systems that automatically process external PDFs or support high-volume document workflows.
Technical view
Poppler before 23.06.0 is reported vulnerable in Outline.cc, specifically OutlineItem::open, allowing a crafted PDF to cause a crash. The CVSS 3.1 score is 5.5 with local attack vector, low complexity, no privileges, required user interaction, and high availability impact.
Likely exposure
Exposure is most likely where Poppler or Poppler-backed tools process untrusted PDFs, including Linux desktops, document previewers, indexing pipelines, and server-side PDF workflows. The source bundle lacks CPE detail, so confirm through package inventory rather than product name alone.
Exploitation context
No active exploitation is stated in the provided sources, and the CVE is not marked KEV. The scenario is a malicious or malformed PDF causing a crash when opened or processed, creating reliability risk for users or automated PDF services.
Researcher notes
The bundle identifies the vulnerable function and upstream fix reference, but affected product metadata is sparse. Avoid assuming downstream impact without package evidence. Focus validation on Poppler library presence, distro backports, and whether untrusted PDFs can reach automated processing paths.
Mitigation direction
- Update Poppler to 23.06.0 or a vendor package containing the referenced fix.
- Apply relevant Fedora or OS vendor advisories where Poppler is distro-managed.
- Limit automatic processing of untrusted PDFs until affected systems are updated.
- Check vendor guidance for backported fixes if version numbers differ by distribution.
Validation and detection
- Inventory systems and applications that include Poppler or Poppler utilities.
- Check installed Poppler package versions against 23.06.0 and vendor advisories.
- Confirm patched packages include the referenced upstream commit or distro security update.
- Review PDF processing crash logs for unexplained OutlineItem or Poppler failures.
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.
CWE-400: Exact CWE lookup
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Open ATT&CK lookupCVE-2023-34872 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
- Medium
- CVSS
- 5.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
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 vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H1.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.5MediumVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://gitlab.freedesktop.org/poppler/poppler/-/commit/591235c8b6c65a2eee88991b9ae73490fd9afdfeCVE reference
- https://gitlab.freedesktop.org/poppler/poppler/-/issues/1399CVE reference
- FEDORA-2023-4285cca9bfCVE reference · vendor-advisory
- FEDORA-2023-4eff9e2cd6CVE reference · vendor-advisory
- FEDORA-2023-f0be0daaa5CVE reference · vendor-advisory
- FEDORA-2023-6b20b7807aCVE reference · vendor-advisory
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3XXL3L6RJOTLGCN7GLH2OLLNF4FJ4T7I/CVE reference
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JQ3NYJ43U2MA7COKGMJDARZUAAOP45D4/CVE reference
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.
Uncontrolled Resource Consumption
Uncontrolled Resource Consumption represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.