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...

CVE-2018-18688

The Portable Document Format PDF specification does not provide any information regarding the concrete procedure of how to validate signatures. Consequently, an Incremental Saving vulnerability exists in multiple products. When an attacker uses the Incremental Saving feature to add pages or...