CVE-2021-29338 : Security Advisory and Response
Learn about CVE-2021-29338, an Integer Overflow vulnerability in OpenJPEG v2.4.0 that allows remote attackers to crash the application, leading to a Denial of Service (DoS) condition. Find out about the impact, affected systems, exploitation mechanism, and mitigation steps.
OpenJPEG version 2.4.0 is affected by an Integer Overflow vulnerability, allowing remote attackers to crash the application by triggering a Denial of Service (DoS) condition. The issue arises when an attacker utilizes the "-ImgDir" command line option on a directory containing a specific number of files.
Understanding CVE-2021-29338
This section provides insights into the nature of the CVE-2021-29338 vulnerability.
What is CVE-2021-29338?
The CVE-2021-29338 vulnerability is an Integer Overflow in OpenJPEG v2.4.0 that can be exploited by remote attackers to cause a denial of service (DoS) by utilizing a specific command line option.
The Impact of CVE-2021-29338
The vulnerability's impact includes the potential for remote attackers to crash the application, resulting in a denial of service (DoS) situation by manipulating a certain command line option.
Technical Details of CVE-2021-29338
In this section, we delve into the technical aspects of the CVE-2021-29338 vulnerability.
Vulnerability Description
The Integer Overflow vulnerability in OpenJPEG v2.4.0 allows attackers to exploit the application, causing it to crash and leading to a denial of service (DoS) condition when a specific command line option is used on a directory with a large number of files.
Affected Systems and Versions
The vulnerability affects OpenJPEG version 2.4.0.
Exploitation Mechanism
Remote attackers can exploit CVE-2021-29338 by leveraging the "-ImgDir" command line option on a directory containing 1048576 files.
Mitigation and Prevention
This section outlines the steps to mitigate and prevent exploitation of CVE-2021-29338.
Immediate Steps to Take
To mitigate the risk associated with CVE-2021-29338, users are advised to update OpenJPEG to a non-vulnerable version and avoid using the specific command line option identified in the vulnerability.
Long-Term Security Practices
Implementing secure coding practices and conducting regular security audits can help prevent and detect vulnerabilities like CVE-2021-29338.
Patching and Updates
Users should regularly check for security updates from OpenJPEG and apply patches promptly to address known vulnerabilities and enhance system security.