Executive Summary
Summary | |
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Title | dhcp security update |
Informations | |||
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Name | RHSA-2011:1819 | First vendor Publication | 2011-12-14 |
Vendor | RedHat | Last vendor Modification | 2011-12-14 |
Severity (Vendor) | Moderate | Revision | 01 |
Security-Database Scoring CVSS v3
Cvss vector : N/A | |||
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Overall CVSS Score | NA | ||
Base Score | NA | Environmental Score | NA |
impact SubScore | NA | Temporal Score | NA |
Exploitabality Sub Score | NA | ||
Calculate full CVSS 3.0 Vectors scores |
Security-Database Scoring CVSS v2
Cvss vector : (AV:N/AC:L/Au:N/C:N/I:N/A:P) | |||
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Cvss Base Score | 5 | Attack Range | Network |
Cvss Impact Score | 2.9 | Attack Complexity | Low |
Cvss Expoit Score | 10 | Authentication | None Required |
Calculate full CVSS 2.0 Vectors scores |
Detail
Problem Description: Updated dhcp packages that fix one security issue are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64 Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64 Red Hat Enterprise Linux HPC Node (v. 6) - x86_64 Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64 Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64 3. Description: The Dynamic Host Configuration Protocol (DHCP) is a protocol that allows individual devices on an IP network to get their own network configuration information, including an IP address, a subnet mask, and a broadcast address. A denial of service flaw was found in the way the dhcpd daemon handled DHCP request packets when regular expression matching was used in "/etc/dhcp/dhcpd.conf". A remote attacker could use this flaw to crash dhcpd. (CVE-2011-4539) Users of DHCP should upgrade to these updated packages, which contain a backported patch to correct this issue. After installing this update, all DHCP servers will be restarted automatically. 4. Solution: Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259 5. Bugs fixed (http://bugzilla.redhat.com/): 761265 - CVE-2011-4539 dhcp: DoS due to processing certain regular expressions |
Original Source
Url : https://rhn.redhat.com/errata/RHSA-2011-1819.html |
CWE : Common Weakness Enumeration
% | Id | Name |
---|---|---|
100 % | CWE-20 | Improper Input Validation |
OVAL Definitions
Definition Id: oval:org.mitre.oval:def:14778 | |||
Oval ID: | oval:org.mitre.oval:def:14778 | ||
Title: | USN-1309-1 -- DHCP vulnerability | ||
Description: | isc-dhcp: DHCP server and client DHCP could be made to crash if it received specially crafted network traffic. | ||
Family: | unix | Class: | patch |
Reference(s): | USN-1309-1 CVE-2011-4539 | Version: | 5 |
Platform(s): | Ubuntu 11.04 Ubuntu 11.10 | Product(s): | DHCP |
Definition Synopsis: | |||
Definition Id: oval:org.mitre.oval:def:22104 | |||
Oval ID: | oval:org.mitre.oval:def:22104 | ||
Title: | RHSA-2011:1819: dhcp security update (Moderate) | ||
Description: | dhcpd in ISC DHCP 4.x before 4.2.3-P1 and 4.1-ESV before 4.1-ESV-R4 does not properly handle regular expressions in dhcpd.conf, which allows remote attackers to cause a denial of service (daemon crash) via a crafted request packet. | ||
Family: | unix | Class: | patch |
Reference(s): | RHSA-2011:1819-01 CESA-2011:1819 CVE-2011-4539 | Version: | 4 |
Platform(s): | Red Hat Enterprise Linux 6 CentOS Linux 6 | Product(s): | dhcp |
Definition Synopsis: | |||
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Definition Id: oval:org.mitre.oval:def:23611 | |||
Oval ID: | oval:org.mitre.oval:def:23611 | ||
Title: | ELSA-2011:1819: dhcp security update (Moderate) | ||
Description: | dhcpd in ISC DHCP 4.x before 4.2.3-P1 and 4.1-ESV before 4.1-ESV-R4 does not properly handle regular expressions in dhcpd.conf, which allows remote attackers to cause a denial of service (daemon crash) via a crafted request packet. | ||
Family: | unix | Class: | patch |
Reference(s): | ELSA-2011:1819-01 CVE-2011-4539 | Version: | 6 |
Platform(s): | Oracle Linux 6 | Product(s): | dhcp |
Definition Synopsis: | |||
Definition Id: oval:org.mitre.oval:def:27859 | |||
Oval ID: | oval:org.mitre.oval:def:27859 | ||
Title: | DEPRECATED: ELSA-2011-1819 -- dhcp security update (moderate) | ||
Description: | [12:4.1.1-25.P1.1] - DoS due to processing certain regular expressions (CVE-2011-4539, #765682) | ||
Family: | unix | Class: | patch |
Reference(s): | ELSA-2011-1819 CVE-2011-4539 | Version: | 4 |
Platform(s): | Oracle Linux 6 | Product(s): | dhcp |
Definition Synopsis: | |||
CPE : Common Platform Enumeration
OpenVAS Exploits
Date | Description |
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2012-10-23 | Name : Fedora Update for dhcp FEDORA-2012-15981 File : nvt/gb_fedora_2012_15981_dhcp_fc16.nasl |
2012-10-03 | Name : Fedora Update for dhcp FEDORA-2012-14076 File : nvt/gb_fedora_2012_14076_dhcp_fc16.nasl |
2012-09-10 | Name : Slackware Advisory SSA:2012-237-01 dhcp File : nvt/esoft_slk_ssa_2012_237_01.nasl |
2012-08-10 | Name : Debian Security Advisory DSA 2519-1 (isc-dhcp) File : nvt/deb_2519_1.nasl |
2012-08-10 | Name : Debian Security Advisory DSA 2519-2 (isc-dhcp) File : nvt/deb_2519_2.nasl |
2012-08-09 | Name : Fedora Update for dhcp FEDORA-2012-11110 File : nvt/gb_fedora_2012_11110_dhcp_fc16.nasl |
2012-07-30 | Name : CentOS Update for dhclient CESA-2011:1819 centos6 File : nvt/gb_CESA-2011_1819_dhclient_centos6.nasl |
2012-07-09 | Name : RedHat Update for dhcp RHSA-2011:1819-01 File : nvt/gb_RHSA-2011_1819-01_dhcp.nasl |
2012-04-02 | Name : Fedora Update for dhcp FEDORA-2011-16981 File : nvt/gb_fedora_2011_16981_dhcp_fc16.nasl |
2012-04-02 | Name : Fedora Update for dhcp FEDORA-2012-0490 File : nvt/gb_fedora_2012_0490_dhcp_fc16.nasl |
2012-01-09 | Name : Fedora Update for dhcp FEDORA-2011-16976 File : nvt/gb_fedora_2011_16976_dhcp_fc15.nasl |
2011-12-16 | Name : Ubuntu Update for isc-dhcp USN-1309-1 File : nvt/gb_ubuntu_USN_1309_1.nasl |
2011-12-09 | Name : Mandriva Update for dhcp MDVSA-2011:182 (dhcp) File : nvt/gb_mandriva_MDVSA_2011_182.nasl |
0000-00-00 | Name : FreeBSD Ports: isc-dhcp42-server File : nvt/freebsd_isc-dhcp42-server.nasl |
Open Source Vulnerability Database (OSVDB)
Id | Description |
---|---|
77584 | ISC DHCP Regular Expressions dhcpd.conf DHCP Request Packet Parsing Remote DoS |
Nessus® Vulnerability Scanner
Date | Description |
---|---|
2015-01-19 | Name : The remote Solaris system is missing a security patch for third-party software. File : solaris11_isc-dhcp_20120404.nasl - Type : ACT_GATHER_INFO |
2014-11-17 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2011-1850.nasl - Type : ACT_GATHER_INFO |
2014-06-13 | Name : The remote openSUSE host is missing a security update. File : suse_11_4_dhcp-111209.nasl - Type : ACT_GATHER_INFO |
2014-06-13 | Name : The remote openSUSE host is missing a security update. File : suse_11_3_dhcp-111209.nasl - Type : ACT_GATHER_INFO |
2014-06-13 | Name : The remote openSUSE host is missing a security update. File : openSUSE-2012-71.nasl - Type : ACT_GATHER_INFO |
2014-06-13 | Name : The remote openSUSE host is missing a security update. File : openSUSE-2011-68.nasl - Type : ACT_GATHER_INFO |
2013-09-04 | Name : The remote Amazon Linux AMI host is missing a security update. File : ala_ALAS-2012-31.nasl - Type : ACT_GATHER_INFO |
2013-07-12 | Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2011-1819.nasl - Type : ACT_GATHER_INFO |
2013-01-09 | Name : The remote Gentoo host is missing one or more security-related patches. File : gentoo_GLSA-201301-06.nasl - Type : ACT_GATHER_INFO |
2012-08-27 | Name : The remote Slackware host is missing a security update. File : Slackware_SSA_2012-237-01.nasl - Type : ACT_GATHER_INFO |
2012-08-02 | Name : The remote Debian host is missing a security-related update. File : debian_DSA-2519.nasl - Type : ACT_GATHER_INFO |
2012-08-01 | Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20111214_dhcp_on_SL6_x.nasl - Type : ACT_GATHER_INFO |
2012-01-03 | Name : The remote Fedora host is missing a security update. File : fedora_2011-16976.nasl - Type : ACT_GATHER_INFO |
2011-12-23 | Name : The remote CentOS host is missing one or more security updates. File : centos_RHSA-2011-1819.nasl - Type : ACT_GATHER_INFO |
2011-12-16 | Name : The remote Ubuntu host is missing a security-related patch. File : ubuntu_USN-1309-1.nasl - Type : ACT_GATHER_INFO |
2011-12-15 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2011-1819.nasl - Type : ACT_GATHER_INFO |
2011-12-15 | Name : The remote Fedora host is missing a security update. File : fedora_2011-16981.nasl - Type : ACT_GATHER_INFO |
2011-12-09 | Name : The remote Mandriva Linux host is missing one or more security updates. File : mandriva_MDVSA-2011-182.nasl - Type : ACT_GATHER_INFO |
2011-12-08 | Name : The remote FreeBSD host is missing one or more security-related updates. File : freebsd_pkg_93be487e211f11e189b4001ec9578670.nasl - Type : ACT_GATHER_INFO |
Alert History
Date | Informations |
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2014-02-17 11:55:26 |
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