CVE-2020-24999 : Exploit Details and Defense Strategies
Learn about CVE-2020-24999 impacting Xpdf 4.0.2, allowing remote attackers to trigger an invalid memory access in the fprintf function, leading to Denial of Service or other impacts. Find mitigation steps and prevention measures.
Xpdf 4.0.2 has a vulnerability that allows a remote attacker to trigger an invalid memory access in the fprintf function, leading to a Denial of Service or other unspecified impacts.
Understanding CVE-2020-24999
Xpdf 4.0.2 vulnerability impacting the fprintf function.
What is CVE-2020-24999?
An invalid memory access in the fprintf function in Xpdf 4.0.2 can be exploited by sending a crafted PDF file to the pdftohtml binary, enabling a remote attacker to cause a Denial of Service or other impacts.
The Impact of CVE-2020-24999
- Allows a remote attacker to trigger a Denial of Service (Segmentation fault) or other unspecified impacts.
Technical Details of CVE-2020-24999
Details of the vulnerability in Xpdf 4.0.2.
Vulnerability Description
- Invalid memory access in the fprintf function in Xpdf 4.0.2.
Affected Systems and Versions
- Product: Xpdf 4.0.2
- Vendor: N/A
- Version: N/A
Exploitation Mechanism
- Crafted PDF file sent to the pdftohtml binary triggers the vulnerability.
Mitigation and Prevention
Steps to mitigate and prevent exploitation of CVE-2020-24999.
Immediate Steps to Take
- Apply vendor patches or updates if available.
- Avoid opening PDF files from untrusted sources.
Long-Term Security Practices
- Regularly update software and systems to the latest versions.
- Implement network security measures to detect and block malicious PDF files.
Patching and Updates
- Check for security advisories from Xpdf and apply patches promptly.