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Gentoo Linux Security Advisory GLSA 200703-19 |
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http://security.gentoo.org/ |
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Severity: High |
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Title: LTSP: Authentication bypass in included LibVNCServer code |
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Date: March 18, 2007 |
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Bugs: #142661 |
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ID: 200703-19 |
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Synopsis |
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======== |
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|
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LTSP includes a version of libVNCServer that is vulnerable to an |
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authentication bypass. |
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Background |
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========== |
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|
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The Linux Terminal Server Project adds thin-client support to Linux |
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servers. |
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|
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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 net-misc/ltsp < 4.2-r1 >= 4.2-r1 |
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Description |
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=========== |
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|
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The LTSP server includes vulnerable LibVNCServer code, which fails to |
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properly validate protocol types effectively letting users decide what |
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protocol to use, such as "Type 1 - None" (GLSA-200608-05). The LTSP VNC |
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server will accept this security type, even if it is not offered by the |
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server. |
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Impact |
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====== |
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|
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An attacker could exploit this vulnerability to gain unauthorized |
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access with the privileges of the user running the VNC server. |
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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 LTSP users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=net-misc/ltsp-4.2-r1" |
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References |
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========== |
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|
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[ 1 ] CVE-2006-2450 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2450 |
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[ 2 ] GLSA 200608-05 |
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http://www.gentoo.org/security/en/glsa/glsa-200608-05.xml |
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|
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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-200703-19.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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http://bugs.gentoo.org. |
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License |
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======= |
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Copyright 2007 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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|
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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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