What is the CVSS score of CVE-2021-31812?

CVE-2021-31812 has a CVSS 3.1 base score of 5.5 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H. EPSS exploitation probability: 3.1%.

Is there a patch available for CVE-2021-31812?

Yes, a patch is available for CVE-2021-31812. Update the affected software to the latest version immediately.

Pdfbox CVE-2021-31812

MEDIUM

Excessive Iteration (CWE-834)

2021-06-12 security@apache.org

Denial Of Service Apache Oracle Fedora Pdfbox Retail Customer Management And Segmentation Foundation Banking Corporate Lending Process Management Banking Credit Facilities Process Management Banking Supply Chain Finance Communications Messaging Server Fedoraproject

5.5

CVSS 3.1 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-834 ASVS 5.0 V15 - Secure Coding and Architecture Excessive iteration
Impact	CVSS score of 5.5 (MEDIUM). Attack characteristics: local attack vector, low complexity, no privileges required, user interaction required.
Exploit ScenarioDerived	Successful exploitation could compromise the medium-severity affected system.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).

Patch available 3.1% exploitation probability (EPSS)

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AnalysisAI

In Apache PDFBox, a carefully crafted PDF file can trigger an infinite loop while loading the file.0.23 and prior 2.0.x versions. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affected Packages

maven org.apache.pdfbox:pdfbox fix: 2.0.24

maven org.apache.pdfbox:pdfbox-parent fix: 2.0.24

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 2 packages in maven

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified under CWE-834. In Apache PDFBox, a carefully crafted PDF file can trigger an infinite loop while loading the file.0.23 and prior 2.0.x versions. Affected products include: Apache Pdfbox, Fedoraproject Fedora, Oracle Banking Corporate Lending Process Management, Oracle Banking Credit Facilities Process Management, Oracle Banking Supply Chain Finance. Version information: version 2.0.23.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 5.5 MEDIUM

AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

DescriptionNVD

In Apache PDFBox, a carefully crafted PDF file can trigger an infinite loop while loading the file. This issue affects Apache PDFBox version 2.0.23 and prior 2.0.x versions.

Blast Radius

ecosystem impact

† from your stack dependencies † transitive graph · vuln.today resolves 4-path depth

57 maven packages depend on org.apache.pdfbox:pdfbox (17 direct, 40 indirect)

Ecosystem-wide dependent count for version 2.0.0.

Threat Intelligence Overview

EPSS Score

3.1%

Top 14% exploitable

Data Quality

2 sources

Confidence: Low

NVD

CVE.org

EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity MEDIUM

CISA KEV No

Public POC No

EPSS 3.1%

Patch available Yes

Active threat No

Deciding rule

MEDIUM severity (CVSS 4.0-6.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Defer

Exploitation· derived

None

System Exposure· derived

Small

Automatable· derived

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +3

CVSS: +28

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Denial of Service MEDIUM

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

Affected Products (CPE)NVD

cpe:2.3:a:apache:pdfbox:*:*:*:*:*:*:*:*

cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*

cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*

cpe:2.3:a:oracle:banking_corporate_lending_process_management:14.2.0:*:*:*:*:*:*:*

cpe:2.3:a:oracle:banking_corporate_lending_process_management:14.3.0:*:*:*:*:*:*:*

cpe:2.3:a:oracle:banking_corporate_lending_process_management:14.5.0:*:*:*:*:*:*:*

cpe:2.3:a:oracle:banking_credit_facilities_process_management:14.2.0:*:*:*:*:*:*:*

cpe:2.3:a:oracle:banking_credit_facilities_process_management:14.3.0:*:*:*:*:*:*:*

cpe:2.3:a:oracle:banking_credit_facilities_process_management:14.5.0:*:*:*:*:*:*:*

cpe:2.3:a:oracle:banking_supply_chain_finance:14.2.0:*:*:*:*:*:*:*

cpe:2.3:a:oracle:banking_supply_chain_finance:14.3.0:*:*:*:*:*:*:*

cpe:2.3:a:oracle:banking_supply_chain_finance:14.5.0:*:*:*:*:*:*:*

cpe:2.3:a:oracle:retail_customer_management_and_segmentation_foundation:18.1:*:*:*:*:*:*:*

cpe:2.3:o:oracle:communications_messaging_server:8.1:*:*:*:*:*:*:*

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References

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