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Gentoo Linux Security Advisory GLSA 200810-02 |
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http://security.gentoo.org/ |
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Severity: High |
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Title: Portage: Untrusted search path local root vulnerability |
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Date: October 09, 2008 |
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Bugs: #239560 |
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ID: 200810-02 |
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Synopsis |
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======== |
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|
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A search path vulnerability in Portage allows local attackers to |
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execute commands with root privileges if emerge is called from |
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untrusted directories. |
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Background |
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========== |
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|
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Portage is Gentoo's package manager which is responsible for |
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installing, compiling and updating all packages on the system through |
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the Gentoo rsync tree. |
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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 sys-apps/portage < 2.1.4.5 >= 2.1.4.5 |
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Description |
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=========== |
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|
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The Gentoo Security Team discovered that several ebuilds, such as |
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sys-apps/portage, net-mail/fetchmail or app-editors/leo execute Python |
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code using "python -c", which includes the current working directory in |
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Python's module search path. For several ebuild functions, Portage did |
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not change the working directory from emerge's working directory. |
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Impact |
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====== |
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|
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A local attacker could place a specially crafted Python module in a |
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directory (such as /tmp) and entice the root user to run commands such |
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as "emerge sys-apps/portage" from that directory, resulting in the |
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execution of arbitrary Python code with root privileges. |
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Workaround |
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========== |
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Do not run "emerge" from untrusted working directories. |
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Resolution |
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========== |
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All Portage users should upgrade to the latest version: |
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# cd /root |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=sys-apps/portage-2.1.4.5" |
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NOTE: To upgrade to Portage 2.1.4.5 using 2.1.4.4 or prior, you must |
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run emerge from a trusted working directory, such as "/root". |
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|
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References |
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========== |
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[ 1 ] CVE-2008-4394 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4394 |
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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-200810-02.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 2008 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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