CVE-2019-15145 : What You Need to Know
Learn about CVE-2019-15145, a vulnerability in DjVuLibre 3.5.27 that allows attackers to trigger a denial-of-service attack by exploiting mishandling issues in image file processing. Find mitigation steps and preventive measures here.
DjVuLibre 3.5.27 allows attackers to cause a denial-of-service attack by exploiting a vulnerability in the handling of JB2 image files. The issue arises from a mishandling problem in JB2Dict::JB2Codec::get_direct_context in libdjvu/JB2Image.h due to a missing zero-bytes check in libdjvu/GBitmap.h.
Understanding CVE-2019-15145
This CVE entry describes a vulnerability in DjVuLibre 3.5.27 that can be exploited by attackers to perform a denial-of-service attack.
What is CVE-2019-15145?
CVE-2019-15145 is a vulnerability in DjVuLibre 3.5.27 that allows attackers to trigger a denial-of-service attack by creating a corrupted JB2 image file and exploiting a mishandling issue in the library's code.
The Impact of CVE-2019-15145
The vulnerability can lead to an application crash through an out-of-bounds read, potentially disrupting the availability of the affected system.
Technical Details of CVE-2019-15145
Dive deeper into the technical aspects of this vulnerability.
Vulnerability Description
The vulnerability in DjVuLibre 3.5.27 arises from a missing zero-bytes check in libdjvu/GBitmap.h, which can be exploited by attackers to cause a denial-of-service attack.
Affected Systems and Versions
- Product: DjVuLibre
- Vendor: N/A
- Version: 3.5.27
Exploitation Mechanism
Attackers can exploit this vulnerability by crafting a corrupted JB2 image file, triggering the mishandling issue in JB2Dict::JB2Codec::get_direct_context in libdjvu/JB2Image.h.
Mitigation and Prevention
Learn how to mitigate the risks associated with CVE-2019-15145.
Immediate Steps to Take
- Apply security updates provided by the vendor promptly.
- Implement proper input validation to prevent malformed image files from being processed.
Long-Term Security Practices
- Regularly update and patch software to address known vulnerabilities.
- Conduct security assessments and audits to identify and remediate potential weaknesses.
Patching and Updates
- Stay informed about security advisories and patches released by DjVuLibre.
- Monitor security mailing lists and vendor announcements for any updates related to this vulnerability.