CVE-2018-20847 : Vulnerability Insights and Analysis

OpenJPEG through version 2.3.0 is affected by a vulnerability in the function opj_get_encoding_parameters, leading to an integer overflow.

Understanding CVE-2018-20847

This CVE involves an improper computation in OpenJPEG that can result in an integer overflow.

What is CVE-2018-20847?

The vulnerability in OpenJPEG through version 2.3.0 arises from an incorrect calculation of certain parameters, potentially causing an integer overflow.

The Impact of CVE-2018-20847

The integer overflow issue could be exploited by attackers to execute arbitrary code or cause a denial of service on systems running the vulnerable OpenJPEG versions.

Technical Details of CVE-2018-20847

OpenJPEG through version 2.3.0 is susceptible to an integer overflow due to incorrect parameter calculations.

Vulnerability Description

The flaw occurs in the function opj_get_encoding_parameters in openjp2/pi.c, leading to an improper computation of specific parameters and resulting in an integer overflow.

Affected Systems and Versions

Product: OpenJPEG
Vendor: N/A
Versions affected: All versions up to 2.3.0

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting malicious input to trigger the incorrect calculation of parameters, potentially leading to an integer overflow.

Mitigation and Prevention

To address CVE-2018-20847, immediate steps and long-term security practices are recommended.

Immediate Steps to Take

Update OpenJPEG to the latest patched version.
Monitor vendor security advisories for updates and patches.
Implement proper input validation to mitigate potential exploitation.

Long-Term Security Practices

Regularly update software and libraries to patch known vulnerabilities.
Conduct security assessments and audits to identify and remediate weaknesses.

Patching and Updates

Apply patches provided by OpenJPEG promptly to fix the vulnerability and prevent exploitation.