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From: condordes at gentoo.org (Joshua J. Berry) Subject: [ GLSA 200407-01 ] Esearch: Insecure temp file handling - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200407-01 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: Esearch: Insecure temp file handling Date: July 01, 2004 Bugs: #55424 ID: 200407-01 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 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 ================= ------------------------------------------------------------------- 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@...too.org 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 -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 189 bytes Desc: not available Url : http://lists.grok.org.uk/pipermail/full-disclosure/attachments/20040701/249c8745/attachment.bin
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