CVE-2021-44956 Explained : Impact and Mitigation
Learn about the heap buffer overflow vulnerabilities in ffjpeg through 01.01.2021, potentially leading to Denial of Service. Find mitigation steps and impact details here.
Two Heap based buffer overflow vulnerabilities exist in ffjpeg through 01.01.2021, similar to CVE-2020-23852. Vulnerabilities in the jfif_decode function at ffjpeg/src/jfif.c (line 552) could lead to a Denial of Service by using a crafted jpeg file.
Understanding CVE-2021-44956
This CVE involves heap based buffer overflow vulnerabilities that could result in Denial of Service attacks.
What is CVE-2021-44956?
The vulnerabilities exist in ffjpeg through 01.01.2021, impacting the jfif_decode function, potentially leading to Denial of Service through a malicious jpeg file.
The Impact of CVE-2021-44956
These vulnerabilities can be exploited to cause Denial of Service, affecting the availability of systems and services.
Technical Details of CVE-2021-44956
This section provides more technical insights into the CVE.
Vulnerability Description
Two Heap based buffer overflow vulnerabilities in ffjpeg through 01.01.2021, located in the jfif_decode function at ffjpeg/src/jfif.c (line 552).
Affected Systems and Versions
- Product: n/a
- Vendor: n/a
- Version: n/a
Exploitation Mechanism
The vulnerabilities can be exploited by using crafted jpeg files to trigger buffer overflows and consequently cause Denial of Service.
Mitigation and Prevention
Mitigation strategies to address CVE-2021-44956.
Immediate Steps to Take
- Apply patches or updates provided by the vendor promptly.
- Implement network segmentation to limit the impact of potential attacks.
Long-Term Security Practices
- Conduct regular security assessments and code reviews to identify and fix vulnerabilities.
- Educate developers on secure coding practices to prevent buffer overflow issues.
Patching and Updates
- Stay informed about security updates from the vendor.
- Regularly update software and dependencies to address known vulnerabilities.