CVE-2017-11625 : What You Need to Know

A security vulnerability related to stack consumption has been discovered in libqpdf in QPDF 6.0.0, allowing attackers to perform a denial of service attack by exploiting a specially crafted file.

Understanding CVE-2017-11625

This CVE entry describes a vulnerability in QPDF 6.0.0 related to stack consumption that can lead to a denial of service attack.

What is CVE-2017-11625?

The vulnerability in libqpdf in QPDF 6.0.0 allows attackers to trigger a denial of service by utilizing a malicious file. It is specifically associated with the QPDF::resolveObjectsInStream function in QPDF.cc, potentially causing an "infinite loop" scenario.

The Impact of CVE-2017-11625

Exploiting this vulnerability can result in a denial of service attack, disrupting the normal operation of the affected system.

Technical Details of CVE-2017-11625

This section provides more technical insights into the CVE.

Vulnerability Description

The vulnerability in QPDF 6.0.0 allows attackers to exploit a specially crafted file, leading to an infinite loop situation due to stack consumption in the QPDF::resolveObjectsInStream function.

Affected Systems and Versions

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Exploitation Mechanism

Attackers can exploit this vulnerability by crafting a specific file to trigger the infinite loop in the QPDF::resolveObjectsInStream function.

Mitigation and Prevention

Protecting systems from CVE-2017-11625 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply security patches provided by the vendor promptly.
Implement file input validation to prevent the execution of malicious files.

Long-Term Security Practices

Regularly update software and libraries to mitigate known vulnerabilities.
Conduct security assessments and penetration testing to identify and address potential weaknesses.

Patching and Updates

Stay informed about security advisories and updates from QPDF to apply relevant patches.