CVE-2020-23901: 
WildBit Viewer vulnerability analysis and mitigation

A User Mode Write Access Violation (AV) vulnerability exists in Editor+0x5d15 of WildBit Viewer v6.6 that allows attackers to cause a denial of service (DoS) via a crafted tga file. The vulnerability was assigned identifier CVE-2020-23901 and was disclosed on August 13, 2020 (MITRE CVE).

The vulnerability is a User Mode Write Access Violation that occurs in the Editor component at offset 0x5d15. When processing a specially crafted TGA image file, the application attempts to perform an invalid memory write operation, leading to an access violation. The specific instruction causing the violation is 'mov dword ptr [edx+eax-8],edx' which attempts to write to an invalid memory address (GitHub Analysis).

When successfully exploited, this vulnerability allows attackers to cause a denial of service condition in WildBit Viewer, potentially crashing the application when processing maliciously crafted TGA image files (MITRE CVE).

The vulnerability requires user interaction as it is triggered by opening a specially crafted TGA file. The exploitability classification is marked as 'EXPLOITABLE' based on crash analysis, indicating a relatively high likelihood of successful exploitation (GitHub Analysis).

Users should upgrade to a version newer than WildBit Viewer 6.6. Additionally, users should exercise caution when opening TGA files from untrusted sources (WildBit Software).