drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Unsichere Verwendung temporärer Dateien in rkhunter
Name: |
Unsichere Verwendung temporärer Dateien in rkhunter
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ID: |
200504-25 |
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Distribution: |
Gentoo |
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Plattformen: |
Keine Angabe |
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Datum: |
Mi, 27. April 2005, 13:00 |
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Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-1270 |
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Applikationen: |
Rootkit Hunter |
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Originalnachricht |
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Severity: Normal Title: Rootkit Hunter: Insecure temporary file creation Date: April 26, 2005 Bugs: #90007 ID: 200504-25
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Synopsis ========
Rootkit Hunter is vulnerable to symlink attacks, potentially allowing a local user to overwrite arbitrary files.
Background ==========
Rootkit Hunter is a scanning tool to detect rootkits, backdoors and local exploits on a local machine. Rootkit Hunter uses downloaded data files to check file integrity. These files are updated via the check_update.sh script.
Affected packages =================
------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 app-forensics/rkhunter < 1.2.3-r1 >= 1.2.3-r1
Description ===========
Sune Kloppenborg Jeppesen and Tavis Ormandy of the Gentoo Linux Security Team have reported that the check_update.sh script and the main rkhunter script insecurely creates several temporary files with predictable filenames.
Impact ======
A local attacker could create symbolic links in the temporary files directory, pointing to a valid file somewhere on the filesystem. When rkhunter or the check_update.sh script runs, this would result in the file being overwritten with the rights of the user running the utility, which could be the root user.
Workaround ==========
There is no known workaround at this time.
Resolution ==========
All Rootkit Hunter users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=app-forensics/rkhunter-1.2.3-r1"
References ==========
[ 1 ] CAN-2005-1270 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1270
Availability ============
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200504-25.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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