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Gentoo Linux Security Advisory GLSA 200712-10 |
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http://security.gentoo.org/ |
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Severity: High |
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Title: Samba: Execution of arbitrary code |
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Date: December 10, 2007 |
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Bugs: #200773 |
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ID: 200712-10 |
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Synopsis |
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======== |
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|
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Samba contains a buffer overflow vulnerability potentially resulting in |
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the execution of arbitrary code. |
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|
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Background |
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========== |
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|
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Samba is a suite of SMB and CIFS client/server programs for UNIX. |
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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-fs/samba < 3.0.28 >= 3.0.28 |
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|
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Description |
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=========== |
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|
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Alin Rad Pop (Secunia Research) discovered a boundary checking error in |
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the send_mailslot() function which could lead to a stack-based buffer |
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overflow. |
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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 a specially crafted "SAMLOGON" domain |
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logon packet, possibly leading to the execution of arbitrary code with |
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elevated privileges. Note that this vulnerability is exploitable only |
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when domain logon support is enabled in Samba, which is not the case in |
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Gentoo's default configuration. |
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|
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Workaround |
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========== |
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|
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Disable domain logon in Samba by setting "domain logons = no" in the |
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"global" section of your smb.conf and restart Samba. |
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|
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Resolution |
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========== |
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|
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All Samba users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=net-fs/samba-3.0.28" |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2007-6015 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6015 |
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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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|
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http://security.gentoo.org/glsa/glsa-200712-10.xml |
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|
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Concerns? |
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========= |
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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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|
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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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