drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Unsichere Verwendung temporärer Dateien in shtool
Name: |
Unsichere Verwendung temporärer Dateien in shtool
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ID: |
200506-08 |
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Distribution: |
Gentoo |
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Plattformen: |
Keine Angabe |
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Datum: |
So, 12. Juni 2005, 13:00 |
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Referenzen: |
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-1751
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-1759 |
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Applikationen: |
GNU shtool |
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Originalnachricht |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200506-08 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: Normal Title: GNU shtool, ocaml-mysql: Insecure temporary file creation Date: June 11, 2005 Bugs: #93782, #93784 ID: 200506-08
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Synopsis ========
GNU shtool and ocaml-mysql are vulnerable to symlink attacks, potentially allowing a local user to overwrite arbitrary files.
Background ==========
GNU shtool is a compilation of small shell scripts into a single shell tool. The ocaml-mysql package includes the GNU shtool code.
Affected packages =================
------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 dev-util/shtool < 2.0.1-r2 >= 2.0.1-r2 2 dev-ml/ocaml-mysql < 1.0.3-r1 >= 1.0.3-r1 ------------------------------------------------------------------- 2 affected packages on all of their supported architectures. -------------------------------------------------------------------
Description ===========
Eric Romang has discovered that GNU shtool insecurely creates temporary files with predictable filenames (CAN-2005-1751). On closer inspection, Gentoo Security discovered that the shtool temporary file, once created, was being reused insecurely (CAN-2005-1759).
Impact ======
A local attacker could create symbolic links in the temporary files directory, pointing to a valid file somewhere on the filesystem. When a GNU shtool script is executed, this would result in the file being overwritten with the rights of the user running the script, which could be the root user.
Workaround ==========
There is no known workaround at this time.
Resolution ==========
All GNU shtool users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=dev-util/shtool-2.0.1-r2"
All ocaml-mysql users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=dev-ml/ocaml-mysql-1.0.3-r1"
References ==========
[ 1 ] CAN-2005-1751 http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1751 [ 2 ] CAN-2005-1759 http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1759
Availability ============
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200506-08.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 2005 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/2.0
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