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Debian DSA-2516-1 Moderate: ISC-DHCP Malicious Message Exploits

debian
Calendar Grey July 26, 2012
Scroller Debian
Two security flaws identified in ISC dhcpd impact resource allocation, necessitating a prompt patch for Debian administrators.
Two security vulnerabilities affecting ISC dhcpd, a server for automatic IP address assignment, in Debian have been discovered
Topics%20covered

Topics Covered

security advisory denial of service debian remote attack resource management isc-dhcp

Summary

Two security vulnerabilities affecting ISC dhcpd, a server for automatic
IP address assignment, in Debian have been discovered.

CVE-2012-3571

Markus Hietava of the Codenomicon CROSS project discovered that it is
possible to force the server to enter an infinite loop via messages with
malformed client identifiers.

CVE-2012-3954

Glen Eustace discovered that DHCP servers running in DHCPv6 mode
and possibly DHCPv4 mode suffer of memory leaks while processing messages.
An attacker can use this flaw to exhaust resources and perform denial
of service attacks.


For the stable distribution (squeeze), this problem has been fixed in
version 4.1.1-P1-15+squeeze4.

For the testing (wheezy) and unstable (sid) distributions, this problem
will be fixed soon.


We recommend that you upgrade your isc-dhcp packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: http://www.debian.org/security/




Severity
important
Lowest
Low
Medium
High
Critical

Package: isc-dhcp
CVE ID: CVE-2012-3571 CVE-2012-3954

Topics%20covered

Topics Covered

security advisory denial of service debian remote attack resource management isc-dhcp

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