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Gentoo Linux Security Advisory GLSA 200604-10 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: zgv, xzgv: Heap overflow |
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Date: April 21, 2006 |
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Bugs: #127008 |
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ID: 200604-10 |
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Synopsis |
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======== |
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|
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xzgv and zgv attempt to decode JPEG images within the CMYK/YCCK colour |
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space incorrectly, potentially resulting in the execution of arbitrary |
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code. |
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|
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Background |
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========== |
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|
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xzgv and zgv are picture viewing utilities with a thumbnail based file |
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selector. |
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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 media-gfx/xzgv < 0.8-r2 >= 0.8-r2 |
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2 media-gfx/zgv < 5.8 >= 5.8 |
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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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Andrea Barisani of Gentoo Linux discovered xzgv and zgv allocate |
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insufficient memory when rendering images with more than 3 output |
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components, such as images using the YCCK or CMYK colour space. When |
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xzgv or zgv attempt to render the image, data from the image overruns a |
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heap allocated buffer. |
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|
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Impact |
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====== |
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|
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An attacker may be able to construct a malicious image that executes |
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arbitrary code with the permissions of the xzgv or zgv user when |
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attempting to render the image. |
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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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All xzgv users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=media-gfx/xzgv-0.8-r2" |
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All zgv users should also upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=media-gfx/zgv-5.8" |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2006-1060 |
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http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-1060 |
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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-200604-10.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/2.0 |
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