CVE-2021-27906 A carefully crafted PDF file can trigger an OutOfMemory-Exception while loading the file
Attackers can cause a denial of service via memory exhaustion by providing a crafted PDF file to applications using the vulnerable library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2021-27906?
CVE-2021-27906 is a medium-severity denial of service vulnerability in Fedoraproject Fedora, published on 19 Mar 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
A carefully crafted PDF file can trigger an OutOfMemory-Exception while loading the file. This issue affects Apache PDFBox version 2.0.22 and prior 2.0.x versions.
Weakness: CWE-789
Which versions are affected by CVE-2021-27906?
2 open source packages ship an affected version, including org.apache.pdfbox:pdfbox. It affects 19 products.
| Package | Affected | Fixed in |
|---|---|---|
org.apache.pdfbox:pdfbox Maven | From 2.0.0 | 2.0.23 |
org.apache.pdfbox:pdfbox Maven | From 2.0.0 | 2.0.23 |
Products include Apache Pdfbox, Fedoraproject Fedora, Oracle Banking Corporate Lending Process Management, Oracle Banking Credit Facilities Process Management, Oracle Banking Supply Chain Finance, Oracle Banking Trade Finance Process Management and 13 more.
How do I fix CVE-2021-27906?
Upgrade org.apache.pdfbox:pdfbox to 2.0.23 or later.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2021-27906 being exploited?
There is no known exploitation of CVE-2021-27906 in the wild and no public exploit code.
Other vulnerabilities in Fedoraproject Fedora
- CVE-2016-2175 High severity vulnerability that affects org.apache.pdfbox:pdfbox
- CVE-2018-8036 Loop with Unreachable Exit Condition in Apache PDFBox
- CVE-2021-31811 A carefully crafted PDF file can trigger an OutOfMemory-Exception while loading a tiny file
- CVE-2021-31812 A carefully crafted PDF file can trigger an infinite loop while loading the file
- CVE-2021-27807 A carefully crafted PDF file can trigger an infinite loop while loading the file
Sources
Also known as DEBIAN-CVE-2021-27906, GHSA-6vqp-h455-42mr, UBUNTU-CVE-2021-27906.