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Gentoo Linux Security Advisory GLSA 200407-17 |
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http://security.gentoo.org/ |
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Severity: High |
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Title: l2tpd: Buffer overflow |
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Date: July 22, 2004 |
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Bugs: #53009 |
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ID: 200407-17 |
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Synopsis |
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======== |
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|
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A buffer overflow in l2tpd could lead to remote code execution. It is |
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not known whether this bug is exploitable. |
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|
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Background |
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========== |
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|
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l2tpd is a GPL implentation of the Layer 2 Tunneling Protocol. |
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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-dialup/l2tpd < 0.69-r2 >= 0.69-r2 |
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|
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Description |
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=========== |
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|
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Thomas Walpuski discovered a buffer overflow that may be exploitable by |
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sending a specially crafted packet. In order to exploit the vulnerable |
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code, an attacker would need to fake the establishment of an L2TP |
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tunnel. |
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|
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Impact |
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====== |
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|
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A remote attacker may be able to execute arbitrary code with the |
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privileges of the user running l2tpd. |
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|
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Workaround |
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========== |
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There is no known workaround for this vulnerability. |
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Resolution |
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========== |
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All users are recommended to upgrade to the latest stable version: |
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# emerge sync |
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# emerge -pv ">=net-l2tpd-0.69-r2" |
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# emerge ">=net-l2tpd-0.69-r2" |
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|
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References |
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========== |
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|
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[ 1 ] CAN-2004-0649 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0649 |
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[ 2 ] Full Disclosure Report |
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http://seclists.org/lists/fulldisclosure/2004/Jun/0094.html |
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|
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Availability |
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============ |
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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-200407-17.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 2004 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/1.0 |
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