GLSA Advocate
Joined: 12 May 2004 Posts: 2663
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Posted: Wed Jun 25, 2014 10:26 pm Post subject: [ GLSA 201406-23 ] DenyHosts: Denial of Service |
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Gentoo Linux Security Advisory
Title: DenyHosts: Denial of Service (GLSA 201406-23)
Severity: normal
Exploitable: remote
Date: June 25, 2014
Bug(s): #495130
ID: 201406-23
Synopsis
A vulnerability in DenyHosts could allow a remote attacker to
create a Denial of Service condition.
Background
DenyHosts is a script intended to be run by Linux system administrators
to help thwart SSH server attacks.
Affected Packages
Package: app-admin/denyhosts
Vulnerable: < 2.6-r9
Unaffected: >= 2.6-r9
Architectures: All supported architectures
Description
DenyHosts does not properly define the regular expressions used when
parsing SSH authentication logs.
Impact
A remote attacker could possibly cause a Denial of Service condition via
a crafted login name.
Workaround
There is no known workaround at this time.
Resolution
All DenyHost users should upgrade to the latest version: Code: | # emerge --sync
# emerge --ask --oneshot --verbose ">=app-admin/denyhosts-2.6-r9"
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References
CVE-2013-6890 |
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