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Gentoo Linux Security Advisory GLSA 200612-05 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: KOffice shared libraries: Heap corruption |
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Date: December 10, 2006 |
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Bugs: #155914 |
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ID: 200612-05 |
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Synopsis |
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======== |
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|
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An integer overflow in koffice-libs allows for a Denial of Service and |
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possibly the execution of arbitrary code when viewing malicious |
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PowerPoint files. |
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|
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Background |
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========== |
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|
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KOffice is an integrated office suite for KDE. koffice-libs is a |
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package containing shared librares used by KOffice programs. |
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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 app-office/koffice-libs < 1.5.0 >= 1.5.0 |
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|
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Description |
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=========== |
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|
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Kees Cook of Ubuntu discovered that 'KLaola::readBigBlockDepot()' in |
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klaola.cc fills 'num_of_bbd_blocks' while reading a .ppt (PowerPoint) |
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file without proper sanitizing, resulting in an integer overflow |
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subsequently overwriting the heap with parts of the file being read. |
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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 open a specially crafted PowerPoint file, an |
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attacker could crash the application and possibly execute arbitrary |
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code with the rights of the user running KOffice. |
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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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All koffice-libs users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=app-office/koffice-libs-1.5.0" |
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References |
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========== |
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[ 1 ] CVE-2006-6120 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-6120 |
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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-200612-05.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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License |
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======= |
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Copyright 2006 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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|
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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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http://creativecommons.org/licenses/by-sa/2.5 |
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