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Name: |
Mangelnde Prüfung von Umgebungsvariablen in Bash |
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ID: |
201409-10 |
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Distribution: |
Gentoo |
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Plattformen: |
Keine Angabe |
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Datum: |
Fr, 26. September 2014, 07:20 |
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Referenzen: |
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-7169 |
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Applikationen: |
GNU Bash |
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Originalnachricht |
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- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 201409-10 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: High Title: Bash: Code Injection (Updated fix for GLSA 201409-09) Date: September 25, 2014 Bugs: #523592 ID: 201409-10
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Synopsis ========
A parsing flaw related to functions and environments in Bash could allow attackers to inject code. The unaffected packages listed in GLSA 201409-09 had an incomplete fix.
Background ==========
Bash is the standard GNU Bourne Again SHell.
Affected packages =================
------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 app-shells/bash < 4.2_p48-r1 *>= 3.1_p18-r1 *>= 3.2_p52-r1 *>= 4.0_p39-r1 *>= 4.1_p12-r1 >= 4.2_p48-r1
Description ===========
Stephane Chazelas reported that Bash incorrectly handles function definitions, allowing attackers to inject arbitrary code (CVE-2014-6271). Gentoo Linux informed about this issue in GLSA 201409-09.
Tavis Ormandy reported that the patch for CVE-2014-6271 was incomplete. As such, this GLSA supersedes GLSA 201409-09.
Impact ======
A remote attacker could exploit this vulnerability to execute arbitrary commands even in restricted environments.
Workaround ==========
There is no known workaround at this time.
Resolution ==========
All Bash 3.1 users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=app-shells/bash-3.1_p18-r1"
All Bash 3.2 users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=app-shells/bash-3.2_p52-r1"
All Bash 4.0 users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=app-shells/bash-4.0_p39-r1"
All Bash 4.1 users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=app-shells/bash-4.1_p12-r1"
All Bash 4.2 users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=app-shells/bash-4.2_p48-r1"
References ==========
[ 1 ] CVE-2014-7169 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-7169
Availability ============
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-201409-10.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 https://bugs.gentoo.org.
License =======
Copyright 2014 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/2.5
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