drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Ausführen von Code mit höheren Privilegien in sudo
Name: |
Ausführen von Code mit höheren Privilegien in sudo |
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ID: |
201705-15 |
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Distribution: |
Gentoo |
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Plattformen: |
Keine Angabe |
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Datum: |
Di, 30. Mai 2017, 18:41 |
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Referenzen: |
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-1000367 |
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Applikationen: |
sudo |
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Originalnachricht |
This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --LK0USbRTNENrw45EchQ02I4cO7PMdRC9X Content-Type: multipart/mixed; boundary="lFAQSXKlSp2VDmo3T0FkQUb6pupJjVw6x"; protected-headers="v1" From: Thomas Deutschmann <whissi@gentoo.org> Reply-To: security@gentoo.org To: gentoo-announce@lists.gentoo.org Message-ID: <660c9ad8-6e24-6200-4190-9b272145af49@gentoo.org> Subject: [ GLSA 201705-15 ] sudo: Privilege escalation
--lFAQSXKlSp2VDmo3T0FkQUb6pupJjVw6x Content-Type: text/plain; charset=utf-8 Content-Language: en-U Content-Transfer-Encoding: quoted-printable
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 201705-15 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: High Title: sudo: Privilege escalation Date: May 30, 2017 Bugs: #620182 ID: 201705-15
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Synopsis ========
A vulnerability in sudo allows local users to gain root privileges.
Background ==========
sudo (su "do") allows a system administrator to delegate authority to give certain users (or groups of users) the ability to run some (or all) commands as root or another user while providing an audit trail of the commands and their arguments.
Affected packages =================
------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 app-admin/sudo < 1.8.20_p1 >= 1.8.20_p1
Description ===========
Qualys discovered a vulnerability in sudo's get_process_ttyname() for Linux, that via sudo_ttyname_scan() can be directed to use a user-controlled, arbitrary tty device during its traversal of "/dev" by utilizing the world-writable /dev/shm.
Impact ======
A local attacker can pretend that his tty is any character device on the filesystem, and after two race conditions, an attacker can pretend that the controlled tty is any file on the filesystem allowing for privilege escalation
Workaround ==========
There is no known workaround at this time.
Resolution ==========
All sudo users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=app-admin/sudo-1.8.20_p1"
References ==========
[ 1 ] CVE-2017-1000367 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-1000367
Availability ============
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
https://security.gentoo.org/glsa/201705-15
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 2017 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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