drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Unsichere Verwendung temporärer Dateien in portage
Name: |
Unsichere Verwendung temporärer Dateien in portage
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ID: |
200411-13:01 |
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Distribution: |
Gentoo |
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Plattformen: |
Keine Angabe |
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Datum: |
Mo, 8. November 2004, 12:00 |
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Referenzen: |
Keine Angabe |
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Applikationen: |
Portage |
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Originalnachricht |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200411-13:01 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: Normal Title: Portage, Gentoolkit: Temporary file vulnerabilities Date: November 07, 2004 Bugs: #68846, #69147 ID: 200411-13:01
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Synopsis ========
dispatch-conf (included in Portage) and qpkg (included in Gentoolkit) are vulnerable to symlink attacks, potentially allowing a local user to overwrite arbitrary files with the rights of the user running the script.
Background ==========
Portage is Gentoo's package management tool. The dispatch-conf utility allows for easy rollback of configuration file changes and automatic updates of configurations files never modified by users. Gentoolkit is a collection of Gentoo specific administration scripts, one of which is the portage querying tool qpkg.
Affected packages =================
------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 sys-apps/portage <= 2.0.51-r2 >= 2.0.51-r3 2 app-portage/gentoolkit <= 0.2.0_pre10 >= 0.2.0_pre10-r1 *>= 0.2.0_pre8-r1 ------------------------------------------------------------------- 2 affected packages on all of their supported architectures. -------------------------------------------------------------------
Description ===========
dispatch-conf and qpkg use predictable filenames for temporary files.
Impact ======
A local attacker could create symbolic links in the temporary files directory, pointing to a valid file somewhere on the filesystem. When an affected script is called, this would result in the file to be overwritten with the rights of the user running the dispatch-conf or qpkg, which could be the root user.
Workaround ==========
There is no known workaround at this time.
Resolution ==========
All Portage users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=sys-apps/portage-2.0.51-r3"
All Gentoolkit users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=app-portage/gentoolkit-0.2.0_pre8-r1"
Availability ============
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200411-13.xml
Concerns? =========
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at http://bugs.gentoo.org.
License =======
Copyright 2004 Gentoo Foundation, Inc; referenced text belongs to its owner(s).
The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.
http://creativecommons.org/licenses/by-sa/1.0
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