CVE-2018-7455 : What You Need to Know
Learn about CVE-2018-7455, an out-of-bounds read vulnerability in xpdf 4.00 allowing attackers to launch denial of service attacks via a specific PDF file. Find mitigation steps and prevention measures here.
A denial of service vulnerability in xpdf 4.00 allows attackers to launch an attack via a specific PDF file.
Understanding CVE-2018-7455
What is CVE-2018-7455?
This CVE involves an out-of-bounds read in JPXStream::readTilePart in JPXStream.cc in xpdf 4.00, enabling attackers to trigger a denial of service using a specific PDF file.
The Impact of CVE-2018-7455
The vulnerability can be exploited by attackers to initiate a denial of service attack through a malicious PDF file.
Technical Details of CVE-2018-7455
Vulnerability Description
An out-of-bounds read in JPXStream::readTilePart in JPXStream.cc in xpdf 4.00 allows attackers to launch denial of service via a specific PDF file, as demonstrated by pdftohtml.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Version: Not applicable
Exploitation Mechanism
Attackers can exploit this vulnerability by using a specific PDF file to trigger a denial of service attack.
Mitigation and Prevention
Immediate Steps to Take
- Implement restrictions on opening PDF files from untrusted sources.
- Regularly update xpdf to the latest version to patch the vulnerability.
Long-Term Security Practices
- Conduct regular security assessments and audits to identify vulnerabilities.
- Educate users on safe PDF file handling practices to prevent exploitation.
Patching and Updates
Apply patches and updates provided by xpdf to address the vulnerability.