CVE-2018-12264 : Exploit Details and Defense Strategies

Exiv2 0.26 has an integer overflow vulnerability in the LoaderTiff::getData() function, leading to an out-of-bounds read in the Exiv2::ValueType::setDataArea function.

Understanding CVE-2018-12264

This CVE involves an integer overflow vulnerability in Exiv2 0.26 that can result in an out-of-bounds read.

What is CVE-2018-12264?

The presence of integer overflows in the LoaderTiff::getData() function within the preview.cpp file of Exiv2 0.26 leads to an out-of-bounds read within the Exiv2::ValueType::setDataArea function in the value.hpp file.

The Impact of CVE-2018-12264

This vulnerability could allow an attacker to execute arbitrary code or cause a denial of service by triggering the out-of-bounds read.

Technical Details of CVE-2018-12264

Exiv2 0.26 is susceptible to an integer overflow vulnerability that can be exploited to trigger an out-of-bounds read.

Vulnerability Description

The vulnerability exists in the LoaderTiff::getData() function, leading to an out-of-bounds read in the Exiv2::ValueType::setDataArea function.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Version: Not applicable

Exploitation Mechanism

The vulnerability can be exploited by crafting a malicious input to trigger the integer overflow, leading to the out-of-bounds read.

Mitigation and Prevention

To address CVE-2018-12264, follow these mitigation strategies:

Immediate Steps to Take

Apply the patches provided by the vendor.
Monitor vendor advisories for updates.
Implement proper input validation to prevent malicious inputs.

Long-Term Security Practices

Regularly update software and libraries.
Conduct security assessments and code reviews.
Educate developers on secure coding practices.

Patching and Updates

Update Exiv2 to a patched version that addresses the integer overflow vulnerability.