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Gentoo Linux Security Advisory GLSA 200606-02 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: shadow: Privilege escalation |
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Date: June 07, 2006 |
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Bugs: #133615 |
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ID: 200606-02 |
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Synopsis |
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======== |
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|
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A security issue in shadow allows a local user to perform certain |
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actions with escalated privileges. |
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Background |
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========== |
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shadow provides a set of utilities to deal with user accounts. |
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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 sys-apps/shadow < 4.0.15-r2 >= 4.0.15-r2 |
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Description |
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=========== |
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When the mailbox is created in useradd, the "open()" function does not |
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receive the three arguments it expects while O_CREAT is present, which |
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leads to random permissions on the created file, before fchmod() is |
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executed. |
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Impact |
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====== |
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Depending on the random permissions given to the mailbox file which is |
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at this time owned by root, a local user may be able to open this file |
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for reading or writing, or even executing it, maybe as the root user. |
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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 shadow users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=sys-apps/shadow-4.0.15-r2" |
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References |
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========== |
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[ 1 ] CVE-2006-1174 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-1174 |
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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-200606-02.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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http://creativecommons.org/licenses/by-sa/2.5 |
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