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Gentoo Linux Security Advisory GLSA 200608-23 |
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http://security.gentoo.org/ |
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|
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Severity: Normal |
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Title: Heartbeat: Denial of Service |
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Date: August 24, 2006 |
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Bugs: #141894 |
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ID: 200608-23 |
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|
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Synopsis |
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======== |
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|
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Heartbeat is vulnerable to a Denial of Service which can be triggered |
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by a remote attacker without authentication. |
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|
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Background |
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========== |
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|
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Heartbeat is a component of the High-Availability Linux project. It is |
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used to perform death-of-node detection, communications and cluster |
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management. |
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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 sys-cluster/heartbeat < 2.0.7 >= 2.0.7 |
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|
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Description |
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=========== |
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|
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Yan Rong Ge discovered that the peel_netstring() function in |
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cl_netstring.c does not validate the "length" parameter of user input, |
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which can lead to an out-of-bounds memory access when processing |
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certain Heartbeat messages (CVE-2006-3121). Furthermore an unspecified |
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local DoS issue was fixed (CVE-2006-3815). |
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|
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Impact |
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====== |
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|
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By sending a malicious UDP Heartbeat message, even before |
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authentication, a remote attacker can crash the master control process |
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of the cluster. |
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|
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Workaround |
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========== |
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|
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There is no known workaround at this time. |
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|
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Resolution |
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========== |
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All Heartbeat users should upgrade to the latest version: |
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|
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=sys-cluster/heartbeat-2.0.7" |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2006-3121 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3121 |
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[ 2 ] CVE-2006-3815 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3815 |
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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-200608-23.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 2006 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 |