CVE-2021-31811— A carefully crafted PDF file can trigger an OutOfMemory-Exception while loading a tiny file
Quick assessment
Affected
Apache Software Foundation Apache PDFBox
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Apache PDFBox是美国阿帕奇（Apache）基金会的一款基于Java语言的开源工具库。该产品提供PDF文档创建和编辑等功能。 Apache PDFBox 存在安全漏洞，攻击者可利用该漏洞通过精心制作一个PDF文件在加载文件时触发一个OutOfMemory-Exception。以下产品和版本受到影响：Apache PDFBox version 2.0.23 and prior 2.0.x versions.
Possible ATT&CK Techniques 1 AI
T1496 · Resource Hijacking
Get alerts for future matching vulnerabilities
Log in to subscribe
I. Basic Information for CVE-2021-31811
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗
Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
A carefully crafted PDF file can trigger an OutOfMemory-Exception while loading a tiny file
Source: CVE Program / CVE List V5
Vulnerability Description
In Apache PDFBox, a carefully crafted PDF file can trigger an OutOfMemory-Exception while loading the file. This issue affects Apache PDFBox version 2.0.23 and prior 2.0.x versions.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
未经控制的内存分配
Source: CVE Program / CVE List V5
Vulnerability Title
Apache PDFBox 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache PDFBox是美国阿帕奇（Apache）基金会的一款基于Java语言的开源工具库。该产品提供PDF文档创建和编辑等功能。 Apache PDFBox 存在安全漏洞，攻击者可利用该漏洞通过精心制作一个PDF文件在加载文件时触发一个OutOfMemory-Exception。以下产品和版本受到影响：Apache PDFBox version 2.0.23 and prior 2.0.x versions.
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Apache Software Foundation | Apache PDFBox | Apache PDFBox ~ 2.0.24 | - |
|
II. Public POCs for CVE-2021-31811
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
Premium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2021-31811
请登录查看更多情报信息。
Vendor Advisories for CVE-2021-31811 (5)
-
https://www.oracle.com/security-alerts/cpuapr2022.html x_refsource_MISC
-
https://www.oracle.com/security-alerts/cpujul2022.html x_refsource_MISC
-
https://www.oracle.com//security-alerts/cpujul2021.html x_refsource_MISC
-
https://www.oracle.com/security-alerts/cpuoct2021.html x_refsource_MISC
-
https://www.oracle.com/security-alerts/cpujan2022.html x_refsource_MISC
Mailing List Discussions for CVE-2021-31811 (12)
-
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7HHWJRFXZ3PTKLJCOM7WJEYZFKFWMNSV/ vendor-advisory x_refsource_FEDORA
-
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MDJKJQOMVFDFIDS27OQJXNOYHV2O273D/ vendor-advisory x_refsource_FEDORA
-
https://lists.apache.org/thread.html/rf937c2236e6c79cdb99f76a70690dd345e53dbe0707cb506a202e43e%40%3Cannounce.apache.org%3E mailing-list x_refsource_MLIST
-
IV. Related Vulnerabilities
Same product: Apache PDFBox
-
CVE-2021-31812
A carefully crafted PDF file can trigger an infinite loop wh -
CVE-2021-27906
A carefully crafted PDF file can trigger an OutOfMemory-Exce -
CVE-2021-27807
A carefully crafted PDF file can trigger an infinite loop wh -
CVE-2019-0228
Apache PDFBox 代码问题漏洞 -
CVE-2018-11797
Apache PDFBox 输入验证错误漏洞
Same vendor: Apache Software Foundation
-
CVE-2026-49845
Apache Hive: SQL Injection vulnerability in HiveMetaStore pa -
CVE-2026-55976
Apache Hive: SSRF vulnerability in Hive Avro Serde due to In -
CVE-2026-53561
Apache Hive: Unauthenticated authentication bypass in HiveSe -
CVE-2026-49050
Apache DolphinScheduler: General user can mint admin access -
CVE-2026-75099
Apache Allura: Unauthenticated REST disclosure
Same weakness: CWE-789
-
CVE-2026-44253
Wazuh: Cluster Protocol Memory Exhaustion (DoS) via unbounde -
CVE-2026-75935
Memory-amplification denial of service via declared-length p -
CVE-2026-69219
RabbitMQ Java client ValueReader: Oversized LongString/bytes -
CVE-2026-72639
Memory Allocation with Excessive Size Value in Elasticsearch -
CVE-2026-72645
Memory Allocation with Excessive Size Value in Elasticsearch
V. Comments for CVE-2021-31811
No comments yet