CVE-2020-1951: 
Java vulnerability analysis and mitigation

A carefully crafted or corrupt PSD file can cause an infinite loop in Apache Tika's PSDParser in versions 1.0-1.23. The vulnerability was discovered and disclosed in March 2020 (NVD).

The vulnerability is classified as a Loop with Unreachable Exit Condition (Infinite Loop) issue. It has been assigned a CVSS v3.1 Base Score of 5.5 (Medium) with the vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H. The vulnerability requires user interaction to exploit, with local access being necessary (NVD).

When successfully exploited, this vulnerability can cause a denial of service condition through an infinite loop in the PSD file parsing process, potentially making the application unresponsive (Ubuntu Security).

The vulnerability requires local access and user interaction to exploit. An attacker would need to convince a user to open a specially crafted or corrupt PSD file to trigger the infinite loop condition (NVD).

The vulnerability has been fixed in Apache Tika version 1.24 and later. Users are advised to upgrade to a patched version. Various Linux distributions have also released security updates to address this vulnerability, including Ubuntu (version 1.5-4ubuntu0.1 for 16.04 LTS) and Debian (version 1.5-1+deb8u1 for Jessie) (Debian Security, Ubuntu Security).