Security readout for executives and security teams
A maliciously crafted PDF can cause Apache PDFBox to get stuck in an infinite loop while loading the file. For a business application, the likely impact is service slowdown or denial of service in workflows that process untrusted PDFs. Exposure is most likely in Java applications, middleware, or products that use Apache PDFBox 2.0.23 or older 2.0.x versions to parse, index, transform, validate, or extract content from PDFs supplied by users or partners. Treat this as a targeted availability risk, not evidence of data theft or system takeover. Prioritize remediation where PDF processing is exposed to customers, partners, email attachments, or automated ingestion pipelines. Mitigation focus: Inventory direct and transitive Apache PDFBox dependencies across applications and packaged products.; Upgrade PDFBox to 2.0.24 or a later vendor-supported fixed release where applicable.; Prioritize systems that process untrusted PDFs automatically or at scale..
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
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CWE-834: Exact CWE lookup
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Open ATT&CK lookupCVE-2021-31812 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://lists.apache.org/thread.html/ra2ab0ce69ce8aaff0773b8c1036438387ce004c2afc6f066626e205e%40%3Cusers.pdfbox.apache.org%3ECVE reference · x_refsource_MISC
- [announce] 20210612 CVE-2021-31812: Apache PDFBox: A carefully crafted PDF file can trigger an infinite loop while loading the fileCVE reference · mailing-list, x_refsource_MLIST
- [ofbiz-notifications] 20210613 [jira] [Updated] (OFBIZ-12256) Update PDFBox to 2.0.24 because of CVE-2021-31811 & CVE-2021-31812CVE reference · mailing-list, x_refsource_MLIST
- [ofbiz-notifications] 20210613 [jira] [Closed] (OFBIZ-12256) Update PDFBox to 2.0.24 because of CVE-2021-31811 & CVE-2021-31812CVE reference · mailing-list, x_refsource_MLIST
- [ofbiz-commits] 20210613 [ofbiz-framework] branch release17.12 updated: Fixed: Update PDFBox to 2.0.24 because of CVE-2021-31811 & CVE-2021-31812 (OFBIZ-12256)CVE reference · mailing-list, x_refsource_MLIST
- [ofbiz-commits] 20210613 [ofbiz-framework] branch trunk updated: Fixed: Update PDFBox to 2.0.24 because of CVE-2021-31811 & CVE-2021-31812 (OFBIZ-12256)CVE reference · mailing-list, x_refsource_MLIST
- [ofbiz-notifications] 20210613 [jira] [Created] (OFBIZ-12256) Update PDFBox to 2.0.24 because of CVE-2021-31811 & CVE-2021-31812CVE reference · mailing-list, x_refsource_MLIST
- [ofbiz-notifications] 20210613 [jira] [Commented] (OFBIZ-12256) Update PDFBox to 2.0.24 because of CVE-2021-31811 & CVE-2021-31812CVE reference · mailing-list, x_refsource_MLIST
- [ofbiz-commits] 20210613 [ofbiz-framework] branch release18.12 updated: Fixed: Update PDFBox to 2.0.24 because of CVE-2021-31811 & CVE-2021-31812 (OFBIZ-12256)CVE reference · mailing-list, x_refsource_MLIST
- FEDORA-2021-4a9ead5fffCVE reference · vendor-advisory, x_refsource_FEDORA
- FEDORA-2021-3d94c14be4CVE reference · vendor-advisory, x_refsource_FEDORA
- https://www.oracle.com/security-alerts/cpuoct2021.htmlCVE reference · x_refsource_MISC
- https://www.oracle.com/security-alerts/cpujan2022.htmlCVE reference · x_refsource_MISC
- https://www.oracle.com/security-alerts/cpuapr2022.htmlCVE reference · x_refsource_MISC
- https://www.oracle.com/security-alerts/cpujul2022.htmlCVE 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.
Excessive Iteration
Excessive Iteration represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.