Alerts This Week
Warning Icon 1 923
Alerts This Week
Warning Icon 1 923

Red Hat Enterprise Linux 3: RHSA-2009:1154-02 Critical: DHCP Buffer Crash

red hat
Calendar Grey July 14, 2009
Dist Redhat Esm H88
Urgent security patch released for Ubuntu focuses on buffer overflow vulnerabilities and unsecure file operations. Take immediate action!
Updated dhcp packages that fix two security issues are now available for Red Hat Enterprise Linux 3. This update has been rated as having critical security impact by the Red Hat S...

Solution

Before applying this update, make sure that all previously-released errata relevant to your system have been applied.

This update is available via Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at

Summary

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.
The Mandriva Linux Engineering Team discovered a stack-based buffer overflow flaw in the ISC DHCP client. If the DHCP client were to receive a malicious DHCP response, it could crash or execute arbitrary code with the permissions of the client (root). (CVE-2009-0692)
An insecure temporary file use flaw was discovered in the DHCP daemon's init script ("/etc/init.d/dhcpd"). A local attacker could use this flaw to overwrite an arbitrary file with the output of the "dhcpd -t" command via a symbolic link attack, if a system administrator executed the DHCP init script with the "configtest", "restart", or "reload" option. (CVE-2009-1893)
Users of DHCP should upgrade to these updated packages, which contain backported patches to correct these issues.

Topics%20covered

Topics Covered

security advisory buffer overflow red hat critical dhcp file issue

References

https://www.cve.org/CVERecord?id=CVE-2009-0692 https://www.cve.org/CVERecord?id=CVE-2009-1893 https://access.redhat.com/security/updates/classification#critical

Package List

Red Hat Enterprise Linux AS version 3:
Source:
i386: dhclient-3.0.1-10.2_EL3.i386.rpm dhcp-3.0.1-10.2_EL3.i386.rpm dhcp-debuginfo-3.0.1-10.2_EL3.i386.rpm dhcp-devel-3.0.1-10.2_EL3.i386.rpm
ia64: dhclient-3.0.1-10.2_EL3.ia64.rpm dhcp-3.0.1-10.2_EL3.ia64.rpm dhcp-debuginfo-3.0.1-10.2_EL3.ia64.rpm dhcp-devel-3.0.1-10.2_EL3.ia64.rpm
ppc: dhclient-3.0.1-10.2_EL3.ppc.rpm dhcp-3.0.1-10.2_EL3.ppc.rpm dhcp-debuginfo-3.0.1-10.2_EL3.ppc.rpm dhcp-devel-3.0.1-10.2_EL3.ppc.rpm
s390: dhclient-3.0.1-10.2_EL3.s390.rpm dhcp-3.0.1-10.2_EL3.s390.rpm dhcp-debuginfo-3.0.1-10.2_EL3.s390.rpm dhcp-devel-3.0.1-10.2_EL3.s390.rpm
s390x: dhclient-3.0.1-10.2_EL3.s390x.rpm dhcp-3.0.1-10.2_EL3.s390x.rpm dhcp-debuginfo-3.0.1-10.2_EL3.s390x.rpm dhcp-devel-3.0.1-10.2_EL3.s390x.rpm
x86_64: dhclient-3.0.1-10.2_EL3.x86_64.rpm dhcp-3.0.1-10.2_EL3.x86_64.rpm dhcp-debuginfo-3.0.1-10.2_EL3.x86_64.rpm dhcp-devel-3.0.1-10.2_EL3.x86_64.rpm
Red Hat Desktop version 3:
Source:
i386: dhclient-3.0.1-10.2_EL3.i386.rpm dhcp-3.0.1-10.2_EL3.i386.rpm dhcp-debuginfo-3.0.1-10.2_EL3.i386.rpm dhcp-devel-3.0.1-10.2_EL3.i386.rpm
x86_64: dhclient-3.0.1-10.2_EL3.x86_64.rpm dhcp-3.0.1-10.2_EL3.x86_64.rpm dhcp-debuginfo-3.0.1-10.2_EL3.x86_64.rpm dhcp-devel-3.0.1-10.2_EL3.x86_64.rpm
Red Hat Enterprise Linux ES version 3:
Source:


Read the Full Advisory


Severity
critical
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2009:1154-02
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2009:1154.html
Issue date: 2009-07-14

Topic

Updated dhcp packages that fix two security issues are now available forRed Hat Enterprise Linux 3.This update has been rated as having critical security impact by the RedHat Security Response Team.

Topics%20covered

Topics Covered

security advisory buffer overflow red hat critical dhcp file issue

Relevant Releases Architectures

Red Hat Enterprise Linux AS version 3 - i386, ia64, ppc, s390, s390x, x86_64

Red Hat Desktop version 3 - i386, x86_64

Red Hat Enterprise Linux ES version 3 - i386, ia64, x86_64

Red Hat Enterprise Linux WS version 3 - i386, ia64, x86_64

Bugs Fixed

507717 - CVE-2009-0692 dhclient: stack overflow leads to arbitrary code execution as root

510024 - CVE-2009-1893 dhcp: insecure temporary file use in the dhcpd init script

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Your message here