CVE-2020-1474: 
vulnerability analysis and mitigation

An information disclosure vulnerability (CVE-2020-1474) was identified in the Windows Image Acquisition (WIA) Service, discovered in 2019 and publicly disclosed in August 2020. The vulnerability affects multiple versions of Microsoft Windows operating systems, including Windows 10, Windows 8.1, Windows 7, and various Windows Server versions. The issue stems from the WIA Service improperly disclosing contents of its memory (NVD, CVE).

The vulnerability received a CVSS v3.1 base score of 5.5 (Medium) from NIST and 7.8 (High) from Microsoft. The CVSS vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N, indicating local access is required with low attack complexity. The vulnerability was initially classified under CWE-200 (Information Disclosure) but was later reclassified as having insufficient information (NVD).

If successfully exploited, this vulnerability could allow an attacker to obtain sensitive information from the system's memory, which could be used to further compromise the user's system. The impact is primarily focused on confidentiality, with no direct impact on system integrity or availability (NVD).

To exploit this vulnerability, an authenticated attacker would need to connect an imaging device (such as a camera, scanner, or cellular phone) to an affected system and run a specially crafted application. The attack requires local access and user interaction (NVD).

Microsoft addressed this vulnerability by releasing a security update that corrects how the WIA Service handles objects in memory. The fix was implemented through Microsoft's regular patch management process (Microsoft Advisory).