Design/Logic Flaw

The Portable Document Format PDF specification does not provide any information regarding the concrete procedure of how to validate signatures. Consequently, a Signature Wrapping vulnerability exists in multiple products. An attacker can use /ByteRange and xref manipulations that are not detected...

CVE-2018-18689

CVE-2018-18689 describes a Signature Wrapping issue in PDF signature validation caused by missing guidance in the PDF spec, allowing attackers to manipulate /ByteRange and xref without detection. The vulnerability affects Foxit Reader before 9.4 and PhantomPDF before 8.3.9 and 9.x before 9.4, as ...

CVE-2018-18689

The Portable Document Format PDF specification does not provide any information regarding the concrete procedure of how to validate signatures. Consequently, a Signature Wrapping vulnerability exists in multiple products. An attacker can use /ByteRange and xref manipulations that are not detected...