Security readout for executives and security teams
Plain-English summary
CVE-2022-35097 is a crash vulnerability in SWFTools when handling TrueType font data during PDF-to-SWF processing. The main business risk is service interruption if untrusted documents are processed in a workstation or automated conversion pipeline.
Executive priority
Prioritize if SWFTools is exposed to customer-supplied documents or production batch conversion. If use is limited to trusted offline files, urgency is lower, but asset inventory and containment remain appropriate.
Technical view
The issue is reported in SWFTools commit 772e55a2 as a segmentation violation in FoFiTrueType::writeTTF within xpdf/FoFiTrueType.cc. CVSS 3.1 is 5.5, with local attack vector, required user interaction, and high availability impact only.
Likely exposure
Exposure is most likely where SWFTools, especially pdf2swf-related workflows, processes untrusted PDFs or embedded font data. The CVE record does not provide precise affected product versions or CPEs.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation evidence. A public PoC reference is listed, so defenders should treat malformed-file testing details as publicly available without assuming real-world exploitation.
Researcher notes
Evidence is limited to the CVE record and GitHub references. Affected version metadata is incomplete, no official patch is named in the bundle, and exploitation should not be claimed beyond the public PoC reference.
Mitigation direction
- Check the SWFTools project issue and vendor guidance for fixed versions or recommended changes.
- Avoid processing untrusted PDFs with vulnerable SWFTools builds until guidance is confirmed.
- Run document conversion jobs in sandboxed, least-privilege environments.
- Add resource isolation and failure handling around PDF-to-SWF conversion services.
- Restrict upload sources and file types where SWFTools is used.
Validation and detection
- Inventory systems, containers, and build pipelines for SWFTools or pdf2swf usage.
- Identify whether deployed builds match or descend from commit 772e55a2.
- Review workflows for untrusted PDF or font ingestion.
- Confirm whether crashes can affect production availability or batch processing queues.
- Track the GitHub issue for fix status and project maintainer guidance.
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-787: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2022-35097 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://github.com/matthiaskramm/swftools/issues/182CVE reference · x_refsource_MISC
- https://github.com/Cvjark/Poc/blob/main/swftools/pdf2swf/CVE-2022-35097.mdCVE 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.
Out-of-bounds Write
Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.