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Gentoo Linux Security Advisory GLSA 201401-23 |
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http://security.gentoo.org/ |
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Severity: High |
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Title: sudo: Privilege escalation |
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Date: January 21, 2014 |
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Bugs: #459722 |
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ID: 201401-23 |
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Synopsis |
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======== |
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|
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Multiple vulnerabilities have been found in sudo which could result in |
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privilege escalation. |
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Background |
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========== |
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|
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sudo allows a system administrator to give users the ability to run |
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commands as other users. Access to commands may also be granted on a |
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range to hosts. |
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Affected packages |
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================= |
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|
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------------------------------------------------------------------- |
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Package / Vulnerable / Unaffected |
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------------------------------------------------------------------- |
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1 app-admin/sudo < 1.8.6_p7 >= 1.8.6_p7 |
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Description |
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=========== |
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|
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Multiple vulnerabilities have been found in sudo: |
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* sudo does not correctly validate the controlling terminal on a system |
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without /proc or when the tty_tickets option is enabled. |
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* sudo does not properly handle the clock when it is set to the epoch. |
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Impact |
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====== |
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A local attacker with sudo privileges could connect to the stdin, |
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stdout, and stderr of the terminal of a user who has authenticated with |
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sudo, allowing the attacker to hijack the authorization of the other |
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user. Additionally, a local or physically proximate attacker could set |
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the system clock to the epoch, bypassing time restrictions on sudo |
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authentication. |
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Workaround |
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========== |
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There is no known workaround at this time. |
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Resolution |
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========== |
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All sudo users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=app-admin/sudo-1.8.6_p7" |
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References |
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========== |
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[ 1 ] CVE-2013-1775 |
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http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-1775 |
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[ 2 ] CVE-2013-1776 |
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http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-1776 |
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[ 3 ] CVE-2013-2776 |
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http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-2776 |
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[ 4 ] CVE-2013-2777 |
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http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-2777 |
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Availability |
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============ |
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This GLSA and any updates to it are available for viewing at |
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the Gentoo Security Website: |
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http://security.gentoo.org/glsa/glsa-201401-23.xml |
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Concerns? |
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========= |
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Security is a primary focus of Gentoo Linux and ensuring the |
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confidentiality and security of our users' machines is of utmost |
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importance to us. Any security concerns should be addressed to |
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security@g.o or alternatively, you may file a bug at |
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https://bugs.gentoo.org. |
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License |
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======= |
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Copyright 2014 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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The contents of this document are licensed under the |
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Creative Commons - Attribution / Share Alike license. |
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http://creativecommons.org/licenses/by-sa/2.5 |
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