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CVE-2017-6850 : What You Need to Know

Learn about CVE-2017-6850, a vulnerability in JasPer versions before 2.0.13 that allows remote attackers to trigger a denial of service via a crafted image. Find mitigation steps and preventive measures here.

A crafted image can lead to a denial of service (NULL pointer dereference) in the jp2_cdef_destroy function of jp2_cod.c in JasPer versions prior to 2.0.13.

Understanding CVE-2017-6850

The vulnerability identified as CVE-2017-6850 affects JasPer versions before 2.0.13, allowing remote attackers to trigger a denial of service by exploiting a NULL pointer dereference in the jp2_cdef_destroy function.

What is CVE-2017-6850?

The jp2_cdef_destroy function in jp2_cod.c in JasPer versions prior to 2.0.13 allows remote attackers to cause a denial of service (NULL pointer dereference) via a crafted image.

The Impact of CVE-2017-6850

This vulnerability can be exploited by attackers to crash systems or potentially execute arbitrary code by sending a specially crafted image to the vulnerable software.

Technical Details of CVE-2017-6850

Vulnerability Description

The vulnerability arises from improper handling of crafted images in the jp2_cdef_destroy function of jp2_cod.c in JasPer versions before 2.0.13.

Affected Systems and Versions

        JasPer versions prior to 2.0.13 are affected by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by sending a specifically crafted image to the vulnerable software, triggering a NULL pointer dereference and leading to a denial of service condition.

Mitigation and Prevention

Immediate Steps to Take

        Update JasPer to version 2.0.13 or later to mitigate the vulnerability.
        Implement network security measures to prevent unauthorized access to vulnerable systems.

Long-Term Security Practices

        Regularly update software and systems to patch known vulnerabilities.
        Conduct security assessments and audits to identify and address potential weaknesses.

Patching and Updates

        Apply patches and updates provided by the software vendor to address security vulnerabilities promptly.

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