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Gentoo Linux Security Advisory GLSA 200608-25 |
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http://security.gentoo.org/ |
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Severity: High |
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Title: X.org and some X.org libraries: Local privilege escalations |
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Date: August 28, 2006 |
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Bugs: #135974 |
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ID: 200608-25 |
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Synopsis |
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======== |
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|
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X.org, libX11, xdm, xf86dga, xinit, xload, xtrans, and xterm are |
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vulnerable to local privilege escalations because of unchecked |
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setuid() calls. |
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|
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Background |
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========== |
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|
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X.org is an implementation of the X Window System. |
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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-apps/xdm < 1.0.4-r1 >= 1.0.4-r1 |
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2 x11-apps/xinit < 1.0.2-r6 >= 1.0.2-r6 |
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3 x11-apps/xload < 1.0.1-r1 >= 1.0.1-r1 |
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4 x11-apps/xf86dga < 1.0.1-r1 >= 1.0.1-r1 |
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5 x11-base/xorg-x11 < 6.9.0-r2 *>= 6.8.2-r8 |
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>= 6.9.0-r2 |
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6 x11-base/xorg-server < 1.1.0-r1 *>= 1.0.2-r6 |
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>= 1.1.0-r1 |
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7 x11-libs/libx11 < 1.0.1-r1 >= 1.0.1-r1 |
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8 x11-libs/xtrans < 1.0.0-r1 >= 1.0.0-r1 |
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9 x11-terms/xterm < 215 >= 215 |
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10 app-emulation/emul-linux-x86-xlibs < 7.0-r2 >= 7.0-r2 |
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------------------------------------------------------------------- |
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# Package 10 [app-emulation/emul-linux-x86-xlibs] only applies to |
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AMD64 users. |
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|
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NOTE: Any packages listed without architecture tags apply to all |
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architectures... |
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------------------------------------------------------------------- |
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10 affected packages |
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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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Several X.org libraries and X.org itself contain system calls to |
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set*uid() functions, without checking their result. |
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|
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Impact |
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====== |
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|
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Local users could deliberately exceed their assigned resource limits |
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and elevate their privileges after an unsuccessful set*uid() system |
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call. This requires resource limits to be enabled on the machine. |
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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 X.Org xdm users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=x11-apps/xdm-1.0.4-r1" |
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All X.Org xinit users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=x11-apps/xinit-1.0.2-r6" |
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All X.Org xload users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=x11-apps/xload-1.0.1-r1" |
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All X.Org xf86dga users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=x11-apps/xf86dga-1.0.1-r1" |
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All X.Org users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=x11-base/xorg-x11-6.9.0-r2" |
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All X.Org X servers users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=x11-base/xorg-server-1.1.0-r1" |
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All X.Org X11 library users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=x11-libs/libx11-1.0.1-r1" |
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All X.Org xtrans library users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=x11-libs/xtrans-1.0.1-r1" |
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All xterm users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=x11-terms/xterm-215" |
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All users of the X11R6 libraries for emulation of 32bit x86 on amd64 |
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should upgrade to the latest version: |
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# emerge --sync |
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# |
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emerge --ask --oneshot --verbose ">=app-emulation/emul-linux-x86-xlibs-7.0-r2" |
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Please note that the fixed packages have been available for most |
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architectures since June 30th but the GLSA release was held up waiting |
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for the remaining architectures. |
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|
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References |
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========== |
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|
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[ 1 ] X.Org security advisory |
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http://lists.freedesktop.org/archives/xorg/2006-June/016146.html |
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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-200608-25.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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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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