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Gentoo Linux Security Advisory GLSA 201406-23 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: DenyHosts: Denial of Service |
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Date: June 25, 2014 |
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Bugs: #495130 |
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ID: 201406-23 |
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Synopsis |
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======== |
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|
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A vulnerability in DenyHosts could allow a remote attacker to create a |
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Denial of Service condition. |
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Background |
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========== |
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DenyHosts is a script intended to be run by Linux system administrators |
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to help thwart SSH server attacks. |
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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 app-admin/denyhosts < 2.6-r9 >= 2.6-r9 |
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Description |
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=========== |
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|
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DenyHosts does not properly define the regular expressions used when |
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parsing SSH authentication logs. |
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Impact |
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====== |
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|
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A remote attacker could possibly cause a Denial of Service condition |
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via a crafted login name. |
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Workaround |
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========== |
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There is no known workaround at this time. |
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Resolution |
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========== |
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All DenyHost users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=app-admin/denyhosts-2.6-r9" |
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References |
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========== |
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[ 1 ] CVE-2013-6890 |
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http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-6890 |
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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-201406-23.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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https://bugs.gentoo.org. |
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License |
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======= |
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Copyright 2014 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/2.5 |
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