ipsec-tools security update

Synopsis

ipsec-tools security update

Type/Severity

Security Advisory: Moderate

Topic

An updated ipsec-tools package that fixes a bug in parsing of ISAKMP headers
is now available.

This update has been rated as having moderate security impact by the Red
Hat Security Response Team.

Description

The ipsec-tools package is used in conjunction with the IPsec functionality
in the linux kernel. The ipsec-tools package includes:

• setkey, a program to directly manipulate policies and SAs
  
• racoon, an IKEv1 keying daemon
  

A bug was found in the way the racoon daemon handled incoming ISAKMP
requests. It is possible that an attacker could crash the racoon daemon by
sending a specially crafted ISAKMP packet. The Common Vulnerabilities and
Exposures project (cve.mitre.org) has assigned the name CAN-2005-0398 to
this issue.

Additionally, the following issues have been fixed:

• racoon mishandled restarts in the presence of stale administration sockets.
  
• on Red Hat Enterprise Linux 4, racoon and setkey did not properly set up
  forward policies, which prevented tunnels from working.
  

Users of ipsec-tools should upgrade to this updated package, which contains
backported patches, and is not vulnerable to these issues.

Solution

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied. Use Red Hat
Network to download and update your packages. To launch the Red Hat
Update Agent, use the following command:

up2date

For information on how to install packages manually, refer to the
following Web page for the System Administration or Customization
guide specific to your system:

http://www.redhat.com/docs/manuals/enterprise/

Affected Products

• Red Hat Enterprise Linux Server 4 x86_64
• Red Hat Enterprise Linux Server 4 ia64
• Red Hat Enterprise Linux Server 4 i386
• Red Hat Enterprise Linux Server 3 x86_64
• Red Hat Enterprise Linux Server 3 ia64
• Red Hat Enterprise Linux Server 3 i386
• Red Hat Enterprise Linux Workstation 4 x86_64
• Red Hat Enterprise Linux Workstation 4 ia64
• Red Hat Enterprise Linux Workstation 4 i386
• Red Hat Enterprise Linux Workstation 3 x86_64
• Red Hat Enterprise Linux Workstation 3 ia64
• Red Hat Enterprise Linux Workstation 3 i386
• Red Hat Enterprise Linux Desktop 4 x86_64
• Red Hat Enterprise Linux Desktop 4 i386
• Red Hat Enterprise Linux Desktop 3 x86_64
• Red Hat Enterprise Linux Desktop 3 i386
• Red Hat Enterprise Linux for IBM z Systems 4 s390x
• Red Hat Enterprise Linux for IBM z Systems 4 s390
• Red Hat Enterprise Linux for IBM z Systems 3 s390x
• Red Hat Enterprise Linux for IBM z Systems 3 s390
• Red Hat Enterprise Linux for Power, big endian 4 ppc
• Red Hat Enterprise Linux for Power, big endian 3 ppc

Fixes

• BZ - 145531 - CAN-2005-0398 racoon DoS
• BZ - 145535 - CAN-2005-0398 racoon DoS
• BZ - 148950 - racoon unable to start with stale socket /tmp/.racoon
• BZ - 150179 - ipsec/racoon/setkey does not properly forward packets to vpn peer

CVEs

• CVE-2005-0398

References

(none)