CVE-2020-10893: 
NixOS vulnerability analysis and mitigation

CVE-2020-10893 is a vulnerability in Foxit PhantomPDF 9.7.1.29511 that affects the U3DBrowser plugin, which handles U3D objects embedded in PDF files. The vulnerability was discovered and disclosed in January 2020, with a patch released in April 2020 (ZDI Advisory).

The vulnerability exists within the handling of U3D objects embedded in PDF files. The specific flaw stems from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated structure. The vulnerability has been assigned a CVSS v3.0 base score of 7.8 (High) with the vector string AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H (ZDI Advisory).

If successfully exploited, this vulnerability allows attackers to execute arbitrary code in the context of the current process. The attack requires user interaction, specifically that the target must visit a malicious page or open a malicious file (ZDI Advisory).

The vulnerability requires user interaction to be exploited, specifically the target must visit a malicious page or open a malicious file containing specially crafted U3D objects embedded in a PDF (ZDI Advisory).

Foxit has released a patch to address this vulnerability. Users are advised to update to the latest version of the software through the official Foxit website or by using the built-in update mechanism (ZDI Advisory, Threatpost).

The vulnerability was discovered and reported by Mat Powell of Trend Micro Zero Day Initiative. The discovery was part of a larger security audit that uncovered multiple vulnerabilities in Foxit's PDF products (Threatpost).