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Gentoo Linux Security Advisory GLSA 200503-36 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: netkit-telnetd: Buffer overflow |
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Date: March 31, 2005 |
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Bugs: #87211 |
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ID: 200503-36 |
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Synopsis |
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======== |
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|
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The netkit-telnetd telnet client is vulnerable to a buffer overflow, |
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which could allow a malicious telnet server operator to execute |
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arbitrary code. |
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Background |
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========== |
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|
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netkit-telnetd provides standard Linux telnet client and server. |
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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/netkit-telnetd < 0.17-r6 >= 0.17-r6 |
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Description |
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=========== |
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|
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A buffer overflow has been identified in the slc_add_reply() function |
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of netkit-telnetd client, where a large number of SLC commands can |
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overflow a fixed size buffer. |
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Impact |
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====== |
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|
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Successful explotation would require a vulnerable user to connect to an |
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attacker-controlled host using telnet, potentially executing arbitrary |
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code with the permissions of the telnet user. |
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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 netkit-telnetd users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=net-misc/netkit-telnetd-0.17-r6" |
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|
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References |
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========== |
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|
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[ 1 ] CAN-2005-0469 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0469 |
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[ 2 ] iDEFENSE Advisory 03-28-05 |
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http://www.idefense.com/application/poi/display?id=220&type=vulnerabilities |
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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-200503-36.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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|
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License |
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======= |
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Copyright 2005 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/2.0 |
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