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Gentoo Linux Security Advisory GLSA 200409-28 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: GTK+ 2, gdk-pixbuf: Multiple image decoding vulnerabilities |
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Date: September 21, 2004 |
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Bugs: #64230 |
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ID: 200409-28 |
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Synopsis |
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======== |
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|
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The GdkPixbuf library, which is also included in GTK+ 2, contains |
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several vulnerabilities that could lead to a Denial of Service or the |
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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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GTK+ (GIMP Toolkit +) is a toolkit for creating graphical user |
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interfaces. The GdkPixbuf library provides facilities for image |
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handling. It is available as a standalone library as well as shipped |
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with GTK+ 2. |
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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 x11-libs/gtk+ < 2.4.9-r1 >= 2.4.9-r1 |
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< 2.0.0 |
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2 media-libs/gdk-pixbuf < 0.22.0-r3 >= 0.22.0-r3 |
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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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A vulnerability has been discovered in the BMP image preprocessor |
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(CAN-2004-0753). Furthermore, Chris Evans found a possible integer |
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overflow in the pixbuf_create_from_xpm() function, resulting in a heap |
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overflow (CAN-2004-0782). He also found a potential stack-based buffer |
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overflow in the xpm_extract_color() function (CAN-2004-0783). A |
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possible integer overflow has also been found in the ICO decoder. |
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|
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Impact |
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====== |
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|
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With a specially crafted BMP image an attacker could cause an affected |
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application to enter an infinite loop when that image is being |
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processed. Also, by making use of specially crafted XPM or ICO images |
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an attacker could trigger the overflows, which potentially allows the |
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execution of arbitrary code. |
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|
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Workaround |
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========== |
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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 GTK+ 2 users should upgrade to the latest version: |
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# emerge sync |
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# emerge -pv ">=x11-libs/gtk+-2.4.9-r1" |
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# emerge ">=x11-libs/gtk+-2.4.9-r1" |
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|
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All GdkPixbuf users should upgrade to the latest version: |
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# emerge sync |
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|
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# emerge -pv ">=media-libs/gdk-pixbuf-0.22.0-r3" |
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# emerge ">=media-libs/gdk-pixbuf-0.22.0-r3" |
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|
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References |
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========== |
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|
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[ 1 ] CAN-2004-0753 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0753 |
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[ 2 ] CAN-2004-0782 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0782 |
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[ 3 ] CAN-2004-0783 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0783 |
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[ 4 ] CAN-2004-0788 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0788 |
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[ 5 ] GNOME Bug 150601 |
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http://bugzilla.gnome.org/show_bug.cgi?id=150601 |
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|
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Availability |
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============ |
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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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|
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http://security.gentoo.org/glsa/glsa-200409-28.xml |
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Concerns? |
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========= |
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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 2004 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/1.0 |
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