CVE-2020-23567:Irfanview v4.53 is vulnerable to a denial of service (DoS) attack through crafted JPEG 2000 files that trigger an integer divide by zero error.

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Irfanview version 4.53 contains a vulnerability that allows attackers to cause a denial of service condition. The issue occurs when processing specially crafted JPEG 2000 files that trigger an integer divide by zero error in the JPEG2000 plugin. This vulnerability is located in the ShowPlugInSaveOptions_W function, specifically at offset 0x82ea. When exploited, the application crashes, rendering it unavailable to users. This is classified as CWE-369 (Divide By Zero).

Overview

This vulnerability affects Irfanview v4.53, a popular image viewing and editing software. The issue stems from improper validation of input when processing JPEG 2000 files, allowing a maliciously crafted file to cause a divide by zero error. When a user opens such a file with the affected version of Irfanview, the application will crash. This vulnerability could be exploited by an attacker to cause denial of service by distributing malicious image files to targets. The vulnerability specifically occurs in the JPEG2000 plugin component at the ShowPlugInSaveOptions_W function.

Remediation

Users should upgrade to a newer version of Irfanview that has patched this vulnerability. If upgrading is not immediately possible, users should:

  • Avoid opening JPEG 2000 files from untrusted sources
  • Consider using alternative image viewing software when handling JPEG 2000 files
  • Implement network security controls to prevent malicious files from reaching end-users
  • Consider disabling the JPEG 2000 plugin if it's not essential for workflow

System administrators should ensure that all instances of Irfanview are updated across their organization and implement security awareness training regarding the risks of opening files from untrusted sources.

References

  • CVE ID: CVE-2020-23567
  • CWE Classification: CWE-369 (Divide By Zero)
  • Exploit details and proof of concept: https://github.com/KamasuOri/publicResearch/tree/master/poc/irfanview/2
  • Affected software: Irfanview v4.53
  • Vulnerability type: Denial of Service (DoS)
  • Vulnerable component: JPEG2000 plugin, specifically in ShowPlugInSaveOptions_W function

Industry ExposureMost to least
This section illustrates the prevalence of a specific Common Vulnerabilities and Exposures (CVE) across various industries based on customer reports. The ranking displays industries from the most to least affected by this particular vulnerability, offering valuable insight into where this CVE has been most frequently observed. This information can help organizations within these sectors prioritize their security efforts, understand their relative risk exposure compared to their peers, and focus remediation strategies where they are most needed. By understanding the industry-specific impact, organizations can make more informed decisions regarding patching, resource allocation, and overall risk management related to this CVE.

  1. Manufacturing
    Manufacturing
  2. Health Care & Social Assistance
    Health Care & Social Assistance
  3. Educational Services
    Educational Services
  4. Arts, Entertainment & Recreation
    Arts, Entertainment & Recreation
  5. Public Administration
    Public Administration
  6. Professional, Scientific, & Technical Services
    Professional, Scientific, & Technical Services
  7. Transportation & Warehousing
    Transportation & Warehousing
  8. Utilities
    Utilities
  9. Accommodation & Food Services
    Accommodation & Food Services
  10. Administrative, Support, Waste Management & Remediation Services
    Administrative, Support, Waste Management & Remediation Services
  11. Agriculture, Forestry Fishing & Hunting
    Agriculture, Forestry Fishing & Hunting
  12. Construction
    Construction
  13. Finance and Insurance
    Finance and Insurance
  14. Information
    Information
  15. Management of Companies & Enterprises
    Management of Companies & Enterprises
  16. Mining
    Mining
  17. Other Services (except Public Administration)
    Other Services (except Public Administration)
  18. Real Estate Rental & Leasing
    Real Estate Rental & Leasing
  19. Retail Trade
    Retail Trade
  20. Wholesale Trade
    Wholesale Trade

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