drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Erlangen von Root-Rechten in cdrecord
Name: |
Erlangen von Root-Rechten in cdrecord
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ID: |
200409-18 |
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Distribution: |
Gentoo |
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Plattformen: |
Keine Angabe |
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Datum: |
Mi, 15. September 2004, 13:00 |
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Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-0806 |
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Applikationen: |
CDRecord |
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Originalnachricht |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200409-18 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: High Title: cdrtools: Local root vulnerability in cdrecord if set SUID root Date: September 14, 2004 Bugs: #63187 ID: 200409-18
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Synopsis ========
cdrecord, if manually set SUID root, is vulnerable to a local root exploit allowing users to escalate privileges.
Background ==========
The cdrtools package is a set of tools for CD recording, including the popular cdrecord command-line utility.
Affected packages =================
------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 app-cdr/cdrtools <= 2.01_alpha37 >= 2.01_alpha37-r1 *>= 2.01_alpha28-r2
Description ===========
Max Vozeler discovered that the cdrecord utility, when set to SUID root, fails to drop root privileges before executing a user-supplied RSH program. By default, Gentoo does not ship the cdrecord utility as SUID root and therefore is not vulnerable. However, many users (and CD-burning front-ends) set this manually after installation.
Impact ======
A local attacker could specify a malicious program using the $RSH environment variable and have it executed by the SUID cdrecord, resulting in root privileges escalation.
Workaround ==========
As a workaround, you could remove the SUID rights from your cdrecord utility :
# chmod a-s /usr/bin/cdrecord
Resolution ==========
All cdrtools users should upgrade to the latest version:
# emerge sync
# emerge -pv ">=app-cdr/cdrtools-2.01_alpha37-r1" # emerge ">=app-cdr/cdrtools-2.01_alpha37-r1"
References ==========
[ 1 ] CAN-2004-0806 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0806
Availability ============
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200409-18.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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