[ GLSA 200710-20 ] PDFKit, ImageKits: Buffer overflow

[GLSA]

Gentoo Linux Security Advisory

Title: PDFKit, ImageKits: Buffer overflow (GLSA 200710-20)
Severity: normal
Exploitable: remote
Date: October 18, 2007
Bug(s): #188185
ID: 200710-20

Synopsis

PDFKit and ImageKits are vulnerable to an integer overflow and a stack overflow allowing for the user-assisted execution of arbitrary code.

Background

PDFKit is a framework for rendering of PDF content in GNUstep applications. ImageKits is a collection of frameworks to support imaging in GNUstep applications.

Affected Packages

Package: gnustep-libs/pdfkit
Vulnerable: <= 0.9_pre062906
Architectures: All supported architectures

Package: gnustep-libs/imagekits
Vulnerable: <= 0.6
Architectures: All supported architectures


Description

Maurycy Prodeus discovered an integer overflow vulnerability possibly leading to a stack-based buffer overflow in the XPDF code which PDFKit is based on. ImageKits also contains a copy of PDFKit.

Impact

By enticing a user to view a specially crafted PDF file with a viewer based on ImageKits or PDFKit such as Gentoo's ViewPDF, a remote attacker could cause an overflow, potentially resulting in the execution of arbitrary code with the privileges of the user running the application.

Workaround

There is no known workaround at this time.

Resolution

PDFKit and ImageKits are not maintained upstream, so the packages were masked in Portage. We recommend that users unmerge PDFKit and ImageKits: