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Gentoo Linux Security Advisory GLSA 200710-20 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: PDFKit, ImageKits: Buffer overflow |
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Date: October 18, 2007 |
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Bugs: #188185 |
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ID: 200710-20 |
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Synopsis |
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======== |
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|
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PDFKit and ImageKits are vulnerable to an integer overflow and a stack |
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overflow allowing for the user-assisted execution of arbitrary code. |
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|
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Background |
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========== |
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|
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PDFKit is a framework for rendering of PDF content in GNUstep |
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applications. ImageKits is a collection of frameworks to support |
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imaging in GNUstep applications. |
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|
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Affected packages |
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================= |
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|
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------------------------------------------------------------------- |
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Package / Vulnerable / Unaffected |
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------------------------------------------------------------------- |
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1 gnustep-libs/pdfkit <= 0.9_pre062906 Vulnerable! |
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2 gnustep-libs/imagekits <= 0.6 Vulnerable! |
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------------------------------------------------------------------- |
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NOTE: Certain packages are still vulnerable. Users should migrate |
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to another package if one is available or wait for the |
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existing packages to be marked stable by their |
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architecture maintainers. |
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------------------------------------------------------------------- |
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2 affected packages on all of their supported architectures. |
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------------------------------------------------------------------- |
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|
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Description |
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=========== |
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|
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Maurycy Prodeus discovered an integer overflow vulnerability possibly |
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leading to a stack-based buffer overflow in the XPDF code which PDFKit |
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is based on. ImageKits also contains a copy of PDFKit. |
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|
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Impact |
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====== |
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|
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By enticing a user to view a specially crafted PDF file with a viewer |
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based on ImageKits or PDFKit such as Gentoo's ViewPDF, a remote |
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attacker could cause an overflow, potentially resulting in the |
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execution of arbitrary code with the privileges of the user running the |
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application. |
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|
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Workaround |
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========== |
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There is no known workaround at this time. |
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Resolution |
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========== |
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PDFKit and ImageKits are not maintained upstream, so the packages were |
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masked in Portage. We recommend that users unmerge PDFKit and |
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ImageKits: |
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|
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# emerge --unmerge gnustep-libs/pdfkit |
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# emerge --unmerge gnustep-libs/imagekits |
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|
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As an alternative, users should upgrade their systems to use PopplerKit |
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instead of PDFKit and Vindaloo instead of ViewPDF. |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2007-3387 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3387 |
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[ 2 ] GLSA 200709-12 |
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http://www.gentoo.org/security/en/glsa/glsa-200709-12.xml |
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|
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Availability |
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============ |
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This GLSA and any updates to it are available for viewing at |
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the Gentoo Security Website: |
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http://security.gentoo.org/glsa/glsa-200710-20.xml |
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Concerns? |
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========= |
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Security is a primary focus of Gentoo Linux and ensuring the |
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confidentiality and security of our users machines is of utmost |
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importance to us. Any security concerns should be addressed to |
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security@g.o or alternatively, you may file a bug at |
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http://bugs.gentoo.org. |
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|
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License |
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======= |
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|
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Copyright 2007 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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The contents of this document are licensed under the |
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Creative Commons - Attribution / Share Alike license. |
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|
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http://creativecommons.org/licenses/by-sa/2.5 |
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