CVE-2018-20751 Information

Description

An issue was discovered in crop_page in PoDoFo 0.9.6. For a crafted PDF document pPage-GetObject()-GetDictionary().AddKey(PdfName(\MediaBox)var) can be problematic due to the function GetObject() being called for the pPage NULL pointer object. The value of pPage at this point is 0x0 which causes a NULL pointer dereference.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Reference

https://research.loginsoft.com/bugs/null-pointer-dereference-vulnerability-in-crop_page-podofo-0-9-6/ https://sourceforge.net/p/podofo/tickets/33/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.8