CVE-2020-24619: 
NixOS vulnerability analysis and mitigation

CVE-2020-24619 affects Shotcut versions before 20.09.13, specifically in the mainwindow.cpp component. The vulnerability was discovered in September 2020 and involves improper TLS certificate validation during the software's upgrade check process. The issue stems from the use of setPeerVerifyMode(QSslSocket::VerifyNone), which effectively disables TLS certificate verification (NVD).

The vulnerability exists in the upgrade check functionality within mainwindow.cpp. The software was configured to skip TLS certificate verification by using setPeerVerifyMode(QSslSocket::VerifyNone) during HTTPS connections. The CVSS v3.1 base score is 5.9 (Medium), with a vector string of CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N, indicating network accessibility with high attack complexity (NVD).

The primary impact of this vulnerability is on data integrity. An attacker could potentially offer a spoofed download resource during the upgrade check process, potentially leading to the installation of malicious software. The vulnerability does not affect confidentiality or availability of the system (NVD).

The vulnerability requires a man-in-the-middle position between the client and the update server. While no active exploits have been reported in the wild, the attack vector is network-based and requires no user interaction or special privileges to exploit (NVD).

The vulnerability was fixed in Shotcut version 20.09.13. The fix involves properly implementing TLS certificate verification for the upgrade check process. All users are encouraged to upgrade to version 20.09.13 or later to address this security vulnerability (Shotcut Blog, GitHub Patch).