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Gentoo Linux Security Advisory GLSA 200710-15 |
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http://security.gentoo.org/ |
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|
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Severity: High |
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Title: KDM: Local privilege escalation |
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Date: October 14, 2007 |
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Bugs: #192373 |
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ID: 200710-15 |
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|
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Synopsis |
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======== |
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|
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KDM allows logins without password under certain circumstances allowing |
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a local user to gain elevated privileges. |
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|
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Background |
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========== |
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|
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KDM is the Display Manager for the graphical desktop environment KDE. |
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It is part of the kdebase package. |
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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 kde-base/kdm < 3.5.7-r2 >= 3.5.7-r2 |
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2 kde-base/kdebase < 3.5.7-r4 >= 3.5.7-r4 |
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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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Kees Huijgen discovered an error when checking the credentials which |
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can lead to a login without specifying a password. This only occurs |
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when auto login is configured for at least one user and a password is |
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required to shut down the machine. |
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|
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Impact |
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====== |
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|
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A local attacker could gain root privileges and execute arbitrary |
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commands by logging in as root without specifying root's password. |
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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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|
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Resolution |
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========== |
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|
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All KDM users should upgrade to the latest version: |
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|
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=kde-base/kdm-3.5.7-r2" |
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|
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All kdebase users should upgrade to the latest version: |
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|
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=kde-base/kdebase-3.5.7-r4" |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2007-4569 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4569 |
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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-200710-15.xml |
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|
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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 2007 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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|
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http://creativecommons.org/licenses/by-sa/2.5 |
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