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Gentoo Linux Security Advisory GLSA 200703-01 |
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http://security.gentoo.org/ |
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Severity: High |
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Title: Snort: Remote execution of arbitrary code |
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Date: February 23, 2007 |
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Bugs: #167730 |
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ID: 200703-01 |
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Synopsis |
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======== |
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|
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The Snort DCE/RPC preprocessor contains a buffer overflow that could |
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result in the remote execution of arbitrary code. |
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Background |
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========== |
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|
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Snort is a widely deployed intrusion detection program. |
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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-analyzer/snort < 2.6.1.3 >= 2.6.1.3 |
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|
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Description |
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=========== |
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|
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The Snort DCE/RPC preprocessor does not properly reassemble certain |
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types of fragmented SMB and DCE/RPC packets. |
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|
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Impact |
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====== |
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|
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A remote attacker could send specially crafted fragmented SMB or |
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DCE/RPC packets, without the need to finish the TCP handshake, that |
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would trigger a stack-based buffer overflow while being reassembled. |
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This could lead to the execution of arbitrary code with the permissions |
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of the user running the Snort preprocessor. |
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|
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Workaround |
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========== |
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|
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Disable the DCE/RPC processor by commenting 'preprocessor rpc_decode' |
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and 'include $RULE_PATH/rpc.rules' from /etc/snort/snort.conf . |
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|
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Resolution |
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========== |
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All Snort users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=net-analyzer/snort-2.6.1.3" |
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|
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References |
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========== |
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[ 1 ] CVE-2006-5276 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-5276 |
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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-200703-01.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 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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|
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http://creativecommons.org/licenses/by-sa/2.5 |
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