CVE-2021-31812

A carefully crafted PDF file can trigger an infinite loop while loading the file

Severity Score

5.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

En Apache PDFBox, un archivo PDF cuidadosamente diseñado puede desencadenar un bucle infinito mientras se carga el archivo. Este problema afecta a versión 2.0.23 de Apache PDFBox anterior a versiones 2.0.x

A minor version update is now available for Red Hat Camel K that includes bug fixes and enhancements, which are documented in the Release Notes document linked to in the References. Issues addressed include code execution, denial of service, deserialization, information leakage, privilege escalation, and server-side request forgery vulnerabilities.

*Credits: Apache PDFBox would like to thank Chaoyuan Peng for reporting this issue

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-04-26 CVE Reserved
2021-06-12 CVE Published
2024-08-03 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-834: Excessive Iteration
CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')

CAPEC

References (18)

URL	Tag	Source
http://www.openwall.com/lists/oss-security/2021/06/12/1	Mailing List
https://lists.apache.org/thread.html/r132e9dbbe0ebdc08b39583d8be0a575fdba573d60a42d940228bceff%40%3Cnotifications.ofbiz.apache.org%3E	Mailing List
https://lists.apache.org/thread.html/r143fd8445e0e778f4a85187bd79438630b96b8040e9401751fdb8aea%40%3Ccommits.ofbiz.apache.org%3E	Mailing List
https://lists.apache.org/thread.html/r179cc3b6822c167702ab35fe36093d5da4c99af44238c8a754c6860f%40%3Ccommits.ofbiz.apache.org%3E	Mailing List
https://lists.apache.org/thread.html/r2090789e4dcc2c87aacbd87d5f18e2d64dcb9f6eb7c47f5cf7d293cb%40%3Cnotifications.ofbiz.apache.org%3E	Mailing List
https://lists.apache.org/thread.html/rd4b6db6c3b8ab3c70f1c3bbd725a40920896453ffc2744ade6afd9fb%40%3Cnotifications.ofbiz.apache.org%3E	Mailing List
https://lists.apache.org/thread.html/re0cacd3fb337cdf8469853913ed2b4ddd8f8bfc52ff0ddbe61c1dfba%40%3Ccommits.ofbiz.apache.org%3E	Mailing List
https://lists.apache.org/thread.html/rf251f6c358087107f8c23473468b279d59d50a75db6b4768165c78d3%40%3Cannounce.apache.org%3E	Mailing List
https://lists.apache.org/thread.html/rfe26bcaba564deb505c32711ba68df7ec589797dcd96ff3389a8aaba%40%3Cnotifications.ofbiz.apache.org%3E	Mailing List
https://www.oracle.com/security-alerts/cpujul2022.html	X_refsource_misc

URL	Date	SRC

URL	Date	SRC
https://www.oracle.com/security-alerts/cpuapr2022.html	2023-11-07
https://www.oracle.com/security-alerts/cpujan2022.html	2023-11-07
https://www.oracle.com/security-alerts/cpuoct2021.html	2023-11-07

URL	Date	SRC
https://lists.apache.org/thread.html/ra2ab0ce69ce8aaff0773b8c1036438387ce004c2afc6f066626e205e%40%3Cusers.pdfbox.apache.org%3E	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7HHWJRFXZ3PTKLJCOM7WJEYZFKFWMNSV	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MDJKJQOMVFDFIDS27OQJXNOYHV2O273D	2023-11-07
https://access.redhat.com/security/cve/CVE-2021-31812	2021-12-02
https://bugzilla.redhat.com/show_bug.cgi?id=1971658	2021-12-02

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Apache Search vendor "Apache"		Pdfbox Search vendor "Apache" for product "Pdfbox"				>= 2.0.0 <= 2.0.23 Search vendor "Apache" for product "Pdfbox" and version " >= 2.0.0 <= 2.0.23"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				33 Search vendor "Fedoraproject" for product "Fedora" and version "33"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				34 Search vendor "Fedoraproject" for product "Fedora" and version "34"		-		Affected
Oracle Search vendor "Oracle"		Banking Corporate Lending Process Management Search vendor "Oracle" for product "Banking Corporate Lending Process Management"				14.2.0 Search vendor "Oracle" for product "Banking Corporate Lending Process Management" and version "14.2.0"		-		Affected
Oracle Search vendor "Oracle"		Banking Corporate Lending Process Management Search vendor "Oracle" for product "Banking Corporate Lending Process Management"				14.3.0 Search vendor "Oracle" for product "Banking Corporate Lending Process Management" and version "14.3.0"		-		Affected
Oracle Search vendor "Oracle"		Banking Corporate Lending Process Management Search vendor "Oracle" for product "Banking Corporate Lending Process Management"				14.5.0 Search vendor "Oracle" for product "Banking Corporate Lending Process Management" and version "14.5.0"		-		Affected
Oracle Search vendor "Oracle"		Banking Credit Facilities Process Management Search vendor "Oracle" for product "Banking Credit Facilities Process Management"				14.2.0 Search vendor "Oracle" for product "Banking Credit Facilities Process Management" and version "14.2.0"		-		Affected
Oracle Search vendor "Oracle"		Banking Credit Facilities Process Management Search vendor "Oracle" for product "Banking Credit Facilities Process Management"				14.3.0 Search vendor "Oracle" for product "Banking Credit Facilities Process Management" and version "14.3.0"		-		Affected
Oracle Search vendor "Oracle"		Banking Credit Facilities Process Management Search vendor "Oracle" for product "Banking Credit Facilities Process Management"				14.5.0 Search vendor "Oracle" for product "Banking Credit Facilities Process Management" and version "14.5.0"		-		Affected
Oracle Search vendor "Oracle"		Banking Supply Chain Finance Search vendor "Oracle" for product "Banking Supply Chain Finance"				14.2.0 Search vendor "Oracle" for product "Banking Supply Chain Finance" and version "14.2.0"		-		Affected
Oracle Search vendor "Oracle"		Banking Supply Chain Finance Search vendor "Oracle" for product "Banking Supply Chain Finance"				14.3.0 Search vendor "Oracle" for product "Banking Supply Chain Finance" and version "14.3.0"		-		Affected
Oracle Search vendor "Oracle"		Banking Supply Chain Finance Search vendor "Oracle" for product "Banking Supply Chain Finance"				14.5.0 Search vendor "Oracle" for product "Banking Supply Chain Finance" and version "14.5.0"		-		Affected
Oracle Search vendor "Oracle"		Retail Customer Management And Segmentation Foundation Search vendor "Oracle" for product "Retail Customer Management And Segmentation Foundation"				18.1 Search vendor "Oracle" for product "Retail Customer Management And Segmentation Foundation" and version "18.1"		-		Affected
Oracle Search vendor "Oracle"		Communications Messaging Server Search vendor "Oracle" for product "Communications Messaging Server"				8.1 Search vendor "Oracle" for product "Communications Messaging Server" and version "8.1"		-		Affected