Security readout for executives and security teams
Plain-English summary
DjVuLibre is a library and toolset for DjVu documents. This CVE describes a memory read flaw triggered by a crafted DjVu file. The confirmed impact is application crash, with unspecified possible additional consequences. Business urgency depends on whether systems process untrusted DjVu files.
Executive priority
Prioritize where DjVu files can be supplied by customers, partners, or the internet. Otherwise handle through normal vulnerability maintenance because severity and exploitation evidence are incomplete.
Technical view
DjVuLibre 3.5.28 and earlier contains an out-of-bounds read in DJVU::DataPool::has_data(). A crafted DjVu file can trigger the flaw. The provided sources do not include CVSS scoring, confirmed code execution, or a complete affected-platform matrix.
Likely exposure
Exposure is most likely in document viewers, file indexing, conversion, or upload-processing services using DjVuLibre 3.5.28 or earlier, especially where untrusted DjVu files are accepted.
Exploitation context
The supplied sources do not show active exploitation, and the CVE is not marked KEV. The known trigger is a crafted DjVu file reaching DjVuLibre parsing. Confirmed impact is crash; further consequences are not detailed.
Researcher notes
Evidence supports an out-of-bounds read in DataPool::has_data() affecting DjVuLibre 3.5.28 and earlier. The source bundle lacks CVSS, patch-version detail, exploit confirmation, and root-cause depth beyond the vulnerable function and crafted-file trigger.
Mitigation direction
- Inventory systems and containers for DjVuLibre 3.5.28 or earlier.
- Apply vendor or distribution updates for DjVuLibre when available.
- Review Debian DSA-5032 and Red Hat Bugzilla guidance for package status.
- Restrict or isolate processing of untrusted DjVu files.
- Disable DjVu handling where it is not operationally required.
Validation and detection
- Check package versions on servers, desktops, and container images.
- Identify applications that call DjVuLibre for viewing, indexing, or conversion.
- Confirm updated packages are installed from supported vendor channels.
- Review crash logs for DjVuLibre or DjVu parsing failures.
- Verify upload pipelines reject or sandbox DjVu files if needed.
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
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CWE-119: Exact CWE lookup
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Open ATT&CK lookupCVE-2021-32492 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://bugzilla.redhat.com/show_bug.cgi?id=1943686CVE reference · x_refsource_MISC
- DSA-5032CVE reference · vendor-advisory, x_refsource_DEBIAN
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.
Improper Restriction of Operations within the Bounds of a Memory Buffer
Improper Restriction of Operations within the Bounds of a Memory Buffer represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.