Recently identified PDF digital signature vulnerabilities

On February 25, 2019, researchers from Ruhr University Bochum ¬†and¬†Hackmanit GmbH published pdf-insecurity.org, a detailed explanation of several vulnerabilities they had identified in PDF viewers and online validation services relevant to signature validation in digitally-signed PDF documents. The vulnerabilities are pertinent only to such digitally-signed documents, and not to PDF in general. These vulnerabilities¬†identified change … Continue reading Recently identified PDF digital signature vulnerabilities