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Gentoo Linux Security Advisory GLSA 200408-08 |
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http://security.gentoo.org/ |
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Severity: High |
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Title: Cfengine : RSA Authentication Heap Corruption |
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Date: August 10, 2004 |
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Bugs: #59895 |
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ID: 200408-08 |
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Synopsis |
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======== |
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|
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Cfengine is vulnerable to a remote root exploit from clients in |
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AllowConnectionsFrom. |
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Background |
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========== |
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|
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Cfengine is an agent/software robot and a high level policy language |
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for building expert systems to administrate and configure large |
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computer networks. |
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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/cfengine <= 2.1.17 >= 2.1.8 |
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net-misc/cfengine >= 2.0.0 >= 2.1.8 |
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|
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Description |
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=========== |
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|
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Two vulnerabilities have been found in cfservd. One is a buffer |
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overflow in the AuthenticationDialogue function and the other is a |
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failure to check the proper return value of the ReceiveTransaction |
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function. |
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Impact |
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====== |
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|
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An attacker could use the buffer overflow to execute arbitrary code |
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with the permissions of the user running cfservd, which is usually the |
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root user. However, before such an attack could be mounted, the |
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IP-based ACL would have to be bypassed. With the second vulnerability, |
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an attacker could cause a denial of service attack. |
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|
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Workaround |
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========== |
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There is no known workaround at this time. All users are encouraged to |
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upgrade to the latest available version of Cfengine. |
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Resolution |
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========== |
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All Cfengine users should upgrade to the latest version: |
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# emerge sync |
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# emerge -pv ">=net-misc/cfengine-2.1.8" |
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# emerge ">=net-misc/cfengine-2.1.8" |
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|
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References |
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========== |
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|
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[ 1 ] Corelabs Advisory |
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http://www.coresecurity.com/common/showdoc.php?idx=387&idxseccion=10 |
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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-200408-08.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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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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