CVE-2019-12973 : Security Advisory and Response
Learn about CVE-2019-12973, a denial of service vulnerability in OpenJPEG 2.3.1 due to excessive iterations in the opj_t1_encode_cblks function. Find out how to mitigate this issue.
OpenJPEG 2.3.1's opj_t1_encode_cblks function involves excessive iterations, potentially leading to a denial of service when manipulated bmp files are provided remotely. This vulnerability is akin to CVE-2018-6616.
Understanding CVE-2019-12973
This CVE involves a vulnerability in OpenJPEG 2.3.1 that could be exploited by remote attackers to cause a denial of service.
What is CVE-2019-12973?
In OpenJPEG 2.3.1, the opj_t1_encode_cblks function in openjp2/t1.c undergoes an excessive number of iterations. Attackers can exploit this flaw by supplying a manipulated bmp file, resulting in a denial of service.
The Impact of CVE-2019-12973
This vulnerability allows remote attackers to potentially disrupt services by exploiting the excessive iteration in the opj_t1_encode_cblks function.
Technical Details of CVE-2019-12973
OpenJPEG 2.3.1 is susceptible to a denial of service vulnerability due to excessive iterations in a specific function.
Vulnerability Description
The opj_t1_encode_cblks function in openjp2/t1.c in OpenJPEG 2.3.1 involves an excessive number of iterations, which can be exploited by remote attackers to trigger a denial of service.
Affected Systems and Versions
- Product: OpenJPEG
- Vendor: N/A
- Version: 2.3.1
Exploitation Mechanism
Attackers can exploit this vulnerability by providing a manipulated bmp file, causing the opj_t1_encode_cblks function to iterate excessively and leading to a denial of service.
Mitigation and Prevention
To address CVE-2019-12973, consider the following steps:
Immediate Steps to Take
- Apply security patches promptly.
- Implement network segmentation to limit the impact of potential attacks.
- Monitor network traffic for any suspicious activity.
Long-Term Security Practices
- Regularly update and patch software to mitigate known vulnerabilities.
- Conduct security training for employees to enhance awareness of potential threats.
Patching and Updates
Ensure that OpenJPEG is updated to a secure version to prevent exploitation of this vulnerability.