(CentOS Issues Fix) Dhcp Buffer Overflow in 'dhclient' Lets Remote Servers Cause the Target Client to Crash
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SecurityTracker Alert ID: 1040534 |
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SecurityTracker URL: http://securitytracker.com/id/1040534
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CVE Reference:
CVE-2018-5732
(Links to External Site)
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Date: Mar 15 2018
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Impact:
Denial of service via network
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Fix Available: Yes Vendor Confirmed: Yes
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Version(s): 4.1.0 - 4.1-ESV-R15, 4.2.0 - 4.2.8, 4.3.0 - 4.3.6, 4.4.0
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Description:
A vulnerability was reported in Dhcp. A remote user can cause the target dhclient to crash.
A remote server can return a specially crafted response to trigger a buffer overflow in the processing of DHCP options and cause the target dhclient to crash.
Felix Wilhelm, Google Security Team, reported this vulnerability.
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Impact:
A remote user can cause the target dhclient to crash.
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Solution:
CentOS has issued a fix.
x86_64:
3351f2b24704decf6a1ab6d8dc05a9da73599860ce1f9105277c697cb6d44b37 dhclient-4.2.5-58.el7.centos.3.x86_64.rpm
a3d922317b213a32b14bf93781a32fb12e2bb8b710ebe638f27e0742bdc2e682 dhcp-4.2.5-58.el7.centos.3.x86_64.rpm
0c094ddce5d16aff7278ec45c4ea32f447a57506a244696f44505ea66e31facf dhcp-common-4.2.5-58.el7.centos.3.x86_64.rpm
1ae6a557f99b7b35b49479da0dd02707b55f74433dda51d75788424968342d8d dhcp-devel-4.2.5-58.el7.centos.3.i686.rpm
d126fded852cf98f7aa01fc64a23d92d9783c8b9eb11d2c6e8853bb42d888e46 dhcp-devel-4.2.5-58.el7.centos.3.x86_64.rpm
ede96702b8f61f4b15a7beccfb71daf1cbfdaf1aa5944f8e79be52e6747f7498 dhcp-libs-4.2.5-58.el7.centos.3.i686.rpm
a6c199e7e0e98c08813c61b1dc0c9572dbc8251e2f3cddea1953f7d4db5451b3 dhcp-libs-4.2.5-58.el7.centos.3.x86_64.rpm
Source:
6b0ee3efe46a400a01f0a6887076040f900e5cf01118975bc37674a323dd4db1 dhcp-4.2.5-58.el7.centos.3.src.rpm
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Cause:
Boundary error
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Underlying OS: Linux (CentOS)
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Underlying OS Comments: 7
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Message History:
This archive entry is a follow-up to the message listed below.
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Source Message Contents
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Subject: [CentOS-announce] CESA-2018:0483 Important CentOS 7 dhcp Security Update
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CentOS Errata and Security Advisory 2018:0483 Important
Upstream details at : https://access.redhat.com/errata/RHSA-2018:0483
The following updated files have been uploaded and are currently
syncing to the mirrors: ( sha256sum Filename )
x86_64:
3351f2b24704decf6a1ab6d8dc05a9da73599860ce1f9105277c697cb6d44b37 dhclient-4.2.5-58.el7.centos.3.x86_64.rpm
a3d922317b213a32b14bf93781a32fb12e2bb8b710ebe638f27e0742bdc2e682 dhcp-4.2.5-58.el7.centos.3.x86_64.rpm
0c094ddce5d16aff7278ec45c4ea32f447a57506a244696f44505ea66e31facf dhcp-common-4.2.5-58.el7.centos.3.x86_64.rpm
1ae6a557f99b7b35b49479da0dd02707b55f74433dda51d75788424968342d8d dhcp-devel-4.2.5-58.el7.centos.3.i686.rpm
d126fded852cf98f7aa01fc64a23d92d9783c8b9eb11d2c6e8853bb42d888e46 dhcp-devel-4.2.5-58.el7.centos.3.x86_64.rpm
ede96702b8f61f4b15a7beccfb71daf1cbfdaf1aa5944f8e79be52e6747f7498 dhcp-libs-4.2.5-58.el7.centos.3.i686.rpm
a6c199e7e0e98c08813c61b1dc0c9572dbc8251e2f3cddea1953f7d4db5451b3 dhcp-libs-4.2.5-58.el7.centos.3.x86_64.rpm
Source:
6b0ee3efe46a400a01f0a6887076040f900e5cf01118975bc37674a323dd4db1 dhcp-4.2.5-58.el7.centos.3.src.rpm
--
Johnny Hughes
CentOS Project { http://www.centos.org/ }
irc: hughesjr, #centos@irc.freenode.net
Twitter: @JohnnyCentOS
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https://lists.centos.org/mailman/listinfo/centos-announce
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