CVE-2019-10019 : Exploit Details and Defense Strategies

A flaw in version 4.01.01 of Xpdf software can lead to a floating point exception (FPE) in the PSOutputDev::checkPageSlice function when handling the variable nStripes.

Understanding CVE-2019-10019

This CVE involves a vulnerability in Xpdf software version 4.01.01 that can result in a floating point exception (FPE) under specific conditions.

What is CVE-2019-10019?

The vulnerability in Xpdf software version 4.01.01 allows for a floating point exception (FPE) to occur in the PSOutputDev::checkPageSlice function when dealing with the variable nStripes.

The Impact of CVE-2019-10019

The vulnerability could potentially lead to a denial of service (DoS) condition or other impacts on systems running the affected Xpdf software version.

Technical Details of CVE-2019-10019

This section provides more technical insights into the CVE.

Vulnerability Description

The flaw in Xpdf software version 4.01.01 triggers a floating point exception (FPE) in the PSOutputDev::checkPageSlice function due to issues with the nStripes variable handling.

Affected Systems and Versions

Affected Version: 4.01.01 of Xpdf software
Systems running this specific version are vulnerable to the floating point exception (FPE) issue.

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting malicious PDF files to trigger the floating point exception (FPE) in the PSOutputDev::checkPageSlice function.

Mitigation and Prevention

Protecting systems from CVE-2019-10019 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update Xpdf software to a patched version that addresses the floating point exception (FPE) vulnerability.
Monitor for any unusual system behavior that could indicate exploitation of the vulnerability.

Long-Term Security Practices

Regularly update software and apply security patches to prevent known vulnerabilities from being exploited.
Implement proper input validation mechanisms to mitigate the risk of similar issues in the future.

Patching and Updates

Stay informed about security advisories and updates from Xpdf software to promptly apply patches that address vulnerabilities like the floating point exception (FPE) in CVE-2019-10019.