CVE-2019-13108 : Security Advisory and Response

Exiv2 versions up to 0.27.1 are vulnerable to an integer overflow issue that can lead to a denial of service attack when processing PNG image files.

Understanding CVE-2019-13108

Exiv2 software versions up to 0.27.1 are affected by an integer overflow vulnerability that can be exploited by a crafted PNG image file, resulting in a denial of service condition.

What is CVE-2019-13108?

CVE-2019-13108 is an integer overflow vulnerability in Exiv2 versions up to 0.27.1 that can be triggered by a specially crafted PNG image file. The vulnerability arises from the mishandling of a zero value assigned to the iccOffset variable in the PngImage::readMetadata function.

The Impact of CVE-2019-13108

The vulnerability in Exiv2 can be exploited by an attacker to cause a denial of service condition (SIGSEGV) by manipulating a PNG image file.

Technical Details of CVE-2019-13108

Exiv2 software versions up to 0.27.1 are susceptible to an integer overflow vulnerability that can be exploited through a manipulated PNG image file.

Vulnerability Description

The vulnerability stems from the mishandling of a zero value assigned to the iccOffset variable in the PngImage::readMetadata function within Exiv2.

Affected Systems and Versions

Product: Exiv2
Vendor: N/A
Versions affected: Up to 0.27.1

Exploitation Mechanism

The vulnerability can be exploited by an attacker through a specially crafted PNG image file, leading to a denial of service condition (SIGSEGV).

Mitigation and Prevention

To address CVE-2019-13108, users and administrators can take the following steps:

Immediate Steps to Take

Update Exiv2 software to version 0.27.1 or later to mitigate the vulnerability.
Avoid opening or processing untrusted PNG image files.

Long-Term Security Practices

Regularly update software and apply security patches to prevent known vulnerabilities.

Patching and Updates

Stay informed about security advisories and updates from Exiv2 to patch any potential vulnerabilities.