Red Hat: 2013:0827-01: openswan: Important Advisory
Summary
Openswan is a free implementation of Internet Protocol Security (IPsec)
and Internet Key Exchange (IKE). IPsec uses strong cryptography to provide
both authentication and encryption services. These services allow you to
build secure tunnels through untrusted networks. When using Opportunistic
Encryption, Openswan's pluto IKE daemon requests DNS TXT records to obtain
public RSA keys of itself and its peers.
A buffer overflow flaw was found in Openswan. If Opportunistic Encryption
were enabled ("oe=yes" in "/etc/ipsec.conf") and an RSA key configured, an
attacker able to cause a system to perform a DNS lookup for an
attacker-controlled domain containing malicious records (such as by sending
an email that triggers a DKIM or SPF DNS record lookup) could cause
Openswan's pluto IKE daemon to crash or, potentially, execute arbitrary
code with root privileges. With "oe=yes" but no RSA key configured, the
issue can only be triggered by attackers on the local network who can
control the reverse DNS entry of the target system. Opportunistic
Encryption is disabled by default. (CVE-2013-2053)
This issue was discovered by Florian Weimer of the Red Hat Product Security
Team.
All users of openswan are advised to upgrade to these updated packages,
which contain backported patches to correct this issue. After installing
this update, the ipsec service will be restarted automatically.
Summary
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/knowledge/articles/11258
References
https://www.redhat.com/security/data/cve/CVE-2013-2053.html https://access.redhat.com/security/updates/classification/#important
Package List
Red Hat Enterprise Linux Desktop (v. 5 client):
Source:
i386:
openswan-2.6.32-5.el5_9.i386.rpm
openswan-debuginfo-2.6.32-5.el5_9.i386.rpm
openswan-doc-2.6.32-5.el5_9.i386.rpm
x86_64:
openswan-2.6.32-5.el5_9.x86_64.rpm
openswan-debuginfo-2.6.32-5.el5_9.x86_64.rpm
openswan-doc-2.6.32-5.el5_9.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source:
i386:
openswan-2.6.32-5.el5_9.i386.rpm
openswan-debuginfo-2.6.32-5.el5_9.i386.rpm
openswan-doc-2.6.32-5.el5_9.i386.rpm
ia64:
openswan-2.6.32-5.el5_9.ia64.rpm
openswan-debuginfo-2.6.32-5.el5_9.ia64.rpm
openswan-doc-2.6.32-5.el5_9.ia64.rpm
ppc:
openswan-2.6.32-5.el5_9.ppc.rpm
openswan-debuginfo-2.6.32-5.el5_9.ppc.rpm
openswan-doc-2.6.32-5.el5_9.ppc.rpm
s390x:
openswan-2.6.32-5.el5_9.s390x.rpm
openswan-debuginfo-2.6.32-5.el5_9.s390x.rpm
openswan-doc-2.6.32-5.el5_9.s390x.rpm
x86_64:
openswan-2.6.32-5.el5_9.x86_64.rpm
openswan-debuginfo-2.6.32-5.el5_9.x86_64.rpm
openswan-doc-2.6.32-5.el5_9.x86_64.rpm
Red Hat Enterprise Linux Desktop (v. 6):
Source:
i386:
openswan-2.6.32-20.el6_4.i686.rpm
openswan-debuginfo-2.6.32-20.el6_4.i686.rpm
x86_64:
openswan-2.6.32-20.el6_4.x86_64.rpm
openswan-debuginfo-2.6.32-20.el6_4.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
Source:
i386:
openswan-debuginfo-2.6.32-20.el6_4.i686.rpm
openswan-doc-2.6.32-20.el6_4.i686.rpm
x86_64:
openswan-debuginfo-2.6.32-20.el6_4.x86_64.rpm
openswan-doc-2.6.32-20.el6_4.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source:
i386:
openswan-2.6.32-20.el6_4.i686.rpm
openswan-debuginfo-2.6.32-20.el6_4.i686.rpm
ppc64:
openswan-2.6.32-20.el6_4.ppc64.rpm
openswan-debuginfo-2.6.32-20.el6_4.ppc64.rpm
s390x:
openswan-2.6.32-20.el6_4.s390x.rpm
openswan-debuginfo-2.6.32-20.el6_4.s390x.rpm
x86_64:
openswan-2.6.32-20.el6_4.x86_64.rpm
openswan-debuginfo-2.6.32-20.el6_4.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 6):
Source:
i386:
openswan-debuginfo-2.6.32-20.el6_4.i686.rpm
openswan-doc-2.6.32-20.el6_4.i686.rpm
ppc64:
openswan-debuginfo-2.6.32-20.el6_4.ppc64.rpm
openswan-doc-2.6.32-20.el6_4.ppc64.rpm
s390x:
openswan-debuginfo-2.6.32-20.el6_4.s390x.rpm
openswan-doc-2.6.32-20.el6_4.s390x.rpm
x86_64:
openswan-debuginfo-2.6.32-20.el6_4.x86_64.rpm
openswan-doc-2.6.32-20.el6_4.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source:
i386:
openswan-2.6.32-20.el6_4.i686.rpm
openswan-debuginfo-2.6.32-20.el6_4.i686.rpm
x86_64:
openswan-2.6.32-20.el6_4.x86_64.rpm
openswan-debuginfo-2.6.32-20.el6_4.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 6):
Source:
i386:
openswan-debuginfo-2.6.32-20.el6_4.i686.rpm
openswan-doc-2.6.32-20.el6_4.i686.rpm
x86_64:
openswan-debuginfo-2.6.32-20.el6_4.x86_64.rpm
openswan-doc-2.6.32-20.el6_4.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/#package
Topic
Updated openswan packages that fix one security issue are now available forRed Hat Enterprise Linux 5 and 6.The Red Hat Security Response Team has rated this update as havingimportant security impact. A Common Vulnerability Scoring System (CVSS)base score, which gives a detailed severity rating, is available from theCVE link in the References section.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64
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 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
Bugs Fixed
960229 - CVE-2013-2053 Openswan: remote buffer overflow in atodn()
