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Vulnerability DatabaseCVE-2020-23894

CVE-2020-23894: 
WildBit Viewer vulnerability analysis and mitigation

Overview

A User Mode Write Access Violation (AV) vulnerability exists in ntdll!RtlpCoalesceFreeBlocks+0x268 of WildBit Viewer version 6.6. This vulnerability allows attackers to cause a denial of service (DoS) condition via a crafted TIFF file (AttackerKB, WildBit Software).

Technical details

The vulnerability occurs due to a User Mode Write Access Violation in the ntdll!RtlpCoalesceFreeBlocks+0x268 component. When processing specially crafted TIFF files, the application attempts to perform a write operation to an invalid memory location, triggering an access violation. The vulnerability has been assigned a CVSS v3 Base Score of 5.5, indicating moderate severity. The attack requires local access and user interaction (AttackerKB).

Impact

When successfully exploited, this vulnerability can lead to a denial of service condition, causing the application to crash. The impact is limited to availability, with no direct impact on confidentiality or integrity (AttackerKB).

Mitigation and workarounds

Users should upgrade to a version newer than WildBit Viewer 6.6. The latest version available is 6.14, which was released on August 23, 2024 (WildBit Software).

Additional resources

Source: This report was generated using AI

Related WildBit Viewer vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2020-23902MEDIUM5.5
  • WildBit ViewerWildBit Viewer
  • cpe:2.3:a:wildbit-soft:wildbit_viewer
NoYesNov 10, 2021
CVE-2020-23901MEDIUM5.5
  • WildBit ViewerWildBit Viewer
  • cpe:2.3:a:wildbit-soft:wildbit_viewer
NoYesNov 10, 2021
CVE-2020-23900MEDIUM5.5
  • WildBit ViewerWildBit Viewer
  • cpe:2.3:a:wildbit-soft:wildbit_viewer
NoYesNov 10, 2021
CVE-2020-23899MEDIUM5.5
  • WildBit ViewerWildBit Viewer
  • cpe:2.3:a:wildbit-soft:wildbit_viewer
NoYesNov 10, 2021
CVE-2020-23898MEDIUM5.5
  • WildBit ViewerWildBit Viewer
  • cpe:2.3:a:wildbit-soft:wildbit_viewer
NoYesNov 10, 2021

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