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Gentoo Linux Security Advisory GLSA 200405-09 |
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http://security.gentoo.org/ |
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Severity: High |
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Title: ProFTPD Access Control List bypass vulnerability |
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Date: May 19, 2004 |
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Bugs: #49496 |
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ID: 200405-09 |
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Synopsis |
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======== |
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|
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Version 1.2.9 of ProFTPD introduced a vulnerability that causes |
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CIDR-based Access Control Lists (ACLs) to be treated as "AllowAll", |
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thereby allowing remote users full access to files available to the |
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FTP daemon. |
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Background |
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========== |
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ProFTPD is an FTP daemon. |
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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-ftp/proftpd == 1.2.9-r1 >= 1.2.9-r2 |
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1 net-ftp/proftpd == 1.2.9 >= 1.2.9-r2 |
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Description |
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=========== |
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|
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ProFTPD 1.2.9 introduced a vulnerability that allows CIDR-based ACLs |
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(such as 10.0.0.1/24) to be bypassed. The CIDR ACLs are disregarded, |
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with the net effect being similar to an "AllowAll" directive. |
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Impact |
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====== |
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|
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This vulnerability may allow unauthorized files, including critical |
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system files to be downloaded and/or modified, thereby allowing a |
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potential remote compromise of the server. |
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|
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Workaround |
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========== |
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Users may work around the problem by avoiding use of CIDR-based ACLs. |
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Resolution |
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========== |
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ProFTPD users are encouraged to upgrade to the latest version of the |
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package: |
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# emerge sync |
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# emerge -pv ">=net-ftp/proftpd-1.2.9-r2" |
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# emerge ">=net-ftp/proftpd-1.2.9-r2" |
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|
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References |
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========== |
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[ 1 ] CAN-2004-0432 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0432 |
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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-200405-09.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 2004 Gentoo Technologies, 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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