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Gentoo Linux Security Advisory GLSA 200407-01
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http://security.gentoo.org/
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Severity: Normal
Title: Esearch: Insecure temp file handling
Date: July 01, 2004
Bugs: #55424
ID: 200407-01
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Synopsis
========
The eupdatedb utility in esearch creates a file in /tmp without first
checking for symlinks. This makes it possible for any user to create
arbitrary files.
Background
==========
Esearch is a replacement for the Portage command "emerge search". It
uses an index to speed up searching of the Portage tree.
Affected packages
=================
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Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 app-portage/esearch <= 0.6.1 >= 0.6.2
Description
===========
The eupdatedb utility uses a temporary file (/tmp/esearchdb.py.tmp) to
indicate that the eupdatedb process is running. When run, eupdatedb
checks to see if this file exists, but it does not check to see if it
is a broken symlink. In the event that the file is a broken symlink,
the script will create the file pointed to by the symlink, instead of
printing an error and exiting.
Impact
======
An attacker could create a symlink from /tmp/esearchdb.py.tmp to a
nonexistent file (such as /etc/nologin), and the file will be created
the next time esearchdb is run.
Workaround
==========
There is no known workaround at this time. All users should upgrade to
the latest available version of esearch.
Resolution
==========
All users should upgrade to the latest available version of esearch, as
follows:
# emerge sync
# emerge -pv ">=app-portage/esearch-0.6.2"
# emerge ">=app-portage/esearch-0.6.2"
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200407-01.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@xxxxxxxxxx or alternatively, you may file a bug at
http://bugs.gentoo.org.
License
=======
Copyright 2004 Gentoo Technologies, 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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