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Gentoo Linux Security Advisory GLSA 200704-03 |
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http://security.gentoo.org/ |
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Severity: High |
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Title: OpenAFS: Privilege escalation |
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Date: April 03, 2007 |
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Bugs: #171662 |
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ID: 200704-03 |
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Synopsis |
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======== |
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|
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OpenAFS is subject to a design flaw that could allow privilege |
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escalation on the client. |
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Background |
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========== |
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|
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OpenAFS is a distributed network filesystem. |
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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 net-fs/openafs < 1.4.4 >= 1.4.4 |
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Description |
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=========== |
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|
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Benjamin Bennett discovered that the OpenAFS client contains a design |
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flaw where cache managers do not use authenticated server connections |
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when performing actions not requested by a user. |
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|
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Impact |
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====== |
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|
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If setuid is enabled on the client cells, an attacker can supply a fake |
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FetchStatus reply that sets setuid and root ownership of a file being |
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executed. This could provide root access on the client. Remote attacks |
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may be possible if an attacker can entice a user to execute a known |
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file. Note that setuid is enabled by default in versions of OpenAFS |
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prior to 1.4.4. |
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|
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Workaround |
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========== |
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|
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Disable the setuid functionality on all client cells. This is now the |
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default configuration in OpenAFS. |
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Resolution |
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========== |
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All OpenAFS users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=net-fs/openafs-1.4.4" |
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References |
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========== |
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[ 1 ] CVE-2007-1507 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1507 |
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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-200704-03.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 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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http://creativecommons.org/licenses/by-sa/2.5 |
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