[SECURITY] [DLA 1313-1] isc-dhcp security update

2018-03-2221:18:10

lists.debian.org

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

0.071 Low

EPSS

Percentile

93.9%

JSON

Package : isc-dhcp
Version : 4.2.2.dfsg.1-5+deb70u9
CVE ID : CVE-2018-5732 CVE-2018-5733

Several vulnerabilities have been discovered in the ISC DHCP client,
relay and server. The Common Vulnerabilities and Exposures project
identifies the following issues:

CVE-2018-5732

Felix Wilhelm of the Google Security Team discovered that the DHCP
client is prone to an out-of-bound memory access vulnerability when
processing specially constructed DHCP options responses, resulting
in potential execution of arbitrary code by a malicious DHCP server.

CVE-2018-5733

Felix Wilhelm of the Google Security Team discovered that the DHCP
server does not properly handle reference counting when processing
client requests. A malicious client can take advantage of this flaw
to cause a denial of service (dhcpd crash) by sending large amounts
of traffic.

For Debian 7 "Wheezy", these problems have been fixed in version
4.2.2.dfsg.1-5+deb70u9.

We recommend that you upgrade your isc-dhcp packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS

OSVersionArchitecturePackageVersionFilename
Debian8mipselisc-dhcp-server-ldap< 4.3.1-6+deb8u3isc-dhcp-server-ldap_4.3.1-6+deb8u3_mipsel.deb
Debian8mipselisc-dhcp-client-dbg< 4.3.1-6+deb8u3isc-dhcp-client-dbg_4.3.1-6+deb8u3_mipsel.deb
Debian7i386isc-dhcp-client< 4.2.2.dfsg.1-5+deb70u9isc-dhcp-client_4.2.2.dfsg.1-5+deb70u9_i386.deb
Debian9i386isc-dhcp-server< 4.3.5-3+deb9u1isc-dhcp-server_4.3.5-3+deb9u1_i386.deb
Debian7armelisc-dhcp-dev< 4.2.2.dfsg.1-5+deb70u9isc-dhcp-dev_4.2.2.dfsg.1-5+deb70u9_armel.deb
Debian9ppc64elisc-dhcp-server-dbgsym< 4.3.5-3+deb9u1isc-dhcp-server-dbgsym_4.3.5-3+deb9u1_ppc64el.deb
Debian9ppc64elisc-dhcp-server-ldap< 4.3.5-3+deb9u1isc-dhcp-server-ldap_4.3.5-3+deb9u1_ppc64el.deb
Debian9mipsisc-dhcp-relay-dbgsym< 4.3.5-3+deb9u1isc-dhcp-relay-dbgsym_4.3.5-3+deb9u1_mips.deb
Debian9i386isc-dhcp-client-dbgsym< 4.3.5-3+deb9u1isc-dhcp-client-dbgsym_4.3.5-3+deb9u1_i386.deb
Debian7i386isc-dhcp-server-ldap< 4.2.2.dfsg.1-5+deb70u9isc-dhcp-server-ldap_4.2.2.dfsg.1-5+deb70u9_i386.deb

OS	Version	Architecture	Package	Version	Filename
Debian	8	mipsel	isc-dhcp-server-ldap	< 4.3.1-6+deb8u3	isc-dhcp-server-ldap_4.3.1-6+deb8u3_mipsel.deb
Debian	8	mipsel	isc-dhcp-client-dbg	< 4.3.1-6+deb8u3	isc-dhcp-client-dbg_4.3.1-6+deb8u3_mipsel.deb
Debian	7	i386	isc-dhcp-client	< 4.2.2.dfsg.1-5+deb70u9	isc-dhcp-client_4.2.2.dfsg.1-5+deb70u9_i386.deb
Debian	9	i386	isc-dhcp-server	< 4.3.5-3+deb9u1	isc-dhcp-server_4.3.5-3+deb9u1_i386.deb
Debian	7	armel	isc-dhcp-dev	< 4.2.2.dfsg.1-5+deb70u9	isc-dhcp-dev_4.2.2.dfsg.1-5+deb70u9_armel.deb
Debian	9	ppc64el	isc-dhcp-server-dbgsym	< 4.3.5-3+deb9u1	isc-dhcp-server-dbgsym_4.3.5-3+deb9u1_ppc64el.deb
Debian	9	ppc64el	isc-dhcp-server-ldap	< 4.3.5-3+deb9u1	isc-dhcp-server-ldap_4.3.5-3+deb9u1_ppc64el.deb
Debian	9	mips	isc-dhcp-relay-dbgsym	< 4.3.5-3+deb9u1	isc-dhcp-relay-dbgsym_4.3.5-3+deb9u1_mips.deb
Debian	9	i386	isc-dhcp-client-dbgsym	< 4.3.5-3+deb9u1	isc-dhcp-client-dbgsym_4.3.5-3+deb9u1_i386.deb
Debian	7	i386	isc-dhcp-server-ldap	< 4.2.2.dfsg.1-5+deb70u9	isc-dhcp-server-ldap_4.2.2.dfsg.1-5+deb70u9_i386.deb