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Gentoo Linux Security Advisory GLSA 200804-11 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: policyd-weight: Insecure temporary file creation |
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Date: April 11, 2008 |
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Bugs: #214403 |
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ID: 200804-11 |
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Synopsis |
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======== |
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|
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policyd-weight uses temporary files in an insecure manner, allowing for |
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a symlink attack. |
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|
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Background |
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========== |
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|
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policyd-weight is a Perl policy daemon for the Postfix MTA intended to |
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eliminate forged envelope senders and HELOs. |
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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 mail-filter/policyd-weight < 0.1.14.17 >= 0.1.14.17 |
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|
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Description |
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=========== |
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|
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Chris Howells reported that policyd-weight creates and uses the |
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"/tmp/.policyd-weight/" directory in an insecure manner. |
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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 exploit this vulnerability to delete arbitrary |
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files or change the ownership to the "polw" user via symlink attacks. |
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Workaround |
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========== |
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|
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Set "$LOCKPATH = '/var/run/policyd-weight/'" manually in |
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"/etc/policyd-weight.conf". |
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Resolution |
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========== |
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All policyd-weight users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot -v ">=mail-filter/policyd-weight-0.1.14.17" |
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This version changes the default path for sockets to |
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"/var/run/policyd-weight", which is only writable by a privileged user. |
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Users need to restart policyd-weight immediately after the upgrade due |
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to this change. |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2008-1569 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1569 |
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|
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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-200804-11.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 2008 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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