85868 2002-12-03 00:01 /176 rader/ <bugzilla@redhat.com>
Importerad: 2002-12-03 00:01 av Brevbäraren
Extern mottagare: redhat-watch-list@redhat.com
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Mottagare: Bugtraq (import) <2618>
Ärende: [RHSA-2002:196-19] Updated xinetd packages fix denial of service vulnerability
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Red Hat, Inc. Red Hat Security Advisory
Synopsis: Updated xinetd packages fix denial of service vulnerability
Advisory ID: RHSA-2002:196-19
Issue date: 2002-09-06
Updated on: 2002-12-02
Product: Red Hat Linux
Keywords: xinetd file descriptor leak flaw:dos-release
Cross references:
Obsoletes:
CVE Names: CAN-2002-0871
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1. Topic:
Xinetd contains a denial-of-service (DoS) vulnerability.
UPDATE 2002-12-02: Updated packages are available to fix issues
encountered with the previous errata packages.
2. Relevant releases/architectures:
Red Hat Linux 7.0 - i386, alpha
Red Hat Linux 7.1 - i386, alpha, ia64
Red Hat Linux 7.2 - i386, ia64
Red Hat Linux 7.3 - i386
Red Hat Linux 8.0 - i386
3. Problem description:
Xinetd is a secure replacement for inetd, the Internet services
daemon.
Versions of Xinetd prior to 2.3.7 leak file descriptors for the
signal pipe to services that are launched by xinetd. This could allow
an attacker to execute a DoS attack via the pipe. The Common
Vulnerabilities and Exposures project has assigned the name
CAN-2002-0871 to this issue.
Red Hat Linux 7.3 shipped with xinetd version 2.3.4 and is therefore
vulnerable to this issue. All users are advised to upgrade to the
errata packages which fix the vulnerability.
Thanks to Solar Designer for discovering this issue.
4. Solution:
Before applying this update, make sure all previously released errata
relevant to your system have been applied.
To update all RPMs for your particular architecture, run:
rpm -Fvh [filenames]
where [filenames] is a list of the RPMs you wish to upgrade. Only
those RPMs which are currently installed will be updated. Those RPMs
which are not installed but included in the list will not be updated.
Note that you can also use wildcards (*.rpm) if your current
directory *only* contains the desired RPMs.
Please note that this update is also available via Red Hat Network.
Many people find this an easier way to apply updates. To use Red Hat
Network, launch the Red Hat Update Agent with the following command:
up2date
This will start an interactive process that will result in the
appropriate RPMs being upgraded on your system.
5. Bug IDs fixed (http://bugzilla.redhat.com/bugzilla for more info):
74696 - Broken tcp_wrappers support
76146 - xinetd 2.3.9 causes hanging CLOSE_WAIT connections
77781 - xinetd stop serving the services because "Too many open files"
6. RPMs required:
Red Hat Linux 7.0:
SRPMS:
ftp://updates.redhat.com/7.0/en/os/SRPMS/xinetd-2.3.7-4.7x.src.rpm
alpha:
ftp://updates.redhat.com/7.0/en/os/alpha/xinetd-2.3.7-4.7x.alpha.rpm
i386:
ftp://updates.redhat.com/7.0/en/os/i386/xinetd-2.3.7-4.7x.i386.rpm
Red Hat Linux 7.1:
SRPMS:
ftp://updates.redhat.com/7.1/en/os/SRPMS/xinetd-2.3.7-4.7x.src.rpm
alpha:
ftp://updates.redhat.com/7.1/en/os/alpha/xinetd-2.3.7-4.7x.alpha.rpm
i386:
ftp://updates.redhat.com/7.1/en/os/i386/xinetd-2.3.7-4.7x.i386.rpm
ia64:
ftp://updates.redhat.com/7.1/en/os/ia64/xinetd-2.3.7-4.7x.ia64.rpm
Red Hat Linux 7.2:
SRPMS:
ftp://updates.redhat.com/7.2/en/os/SRPMS/xinetd-2.3.7-4.7x.src.rpm
i386:
ftp://updates.redhat.com/7.2/en/os/i386/xinetd-2.3.7-4.7x.i386.rpm
ia64:
ftp://updates.redhat.com/7.2/en/os/ia64/xinetd-2.3.7-4.7x.ia64.rpm
Red Hat Linux 7.3:
SRPMS:
ftp://updates.redhat.com/7.3/en/os/SRPMS/xinetd-2.3.7-4.7x.src.rpm
i386:
ftp://updates.redhat.com/7.3/en/os/i386/xinetd-2.3.7-4.7x.i386.rpm
Red Hat Linux 8.0:
SRPMS:
ftp://updates.redhat.com/8.0/en/os/SRPMS/xinetd-2.3.7-5.src.rpm
i386:
ftp://updates.redhat.com/8.0/en/os/i386/xinetd-2.3.7-5.i386.rpm
7. Verification:
MD5 sum Package Name
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38b5f218a384a7ba7cdc0168e2d5f892 7.0/en/os/SRPMS/xinetd-2.3.7-4.7x.src.rpm
ee9c54046762e1b3aa53d66da927f9ce 7.0/en/os/alpha/xinetd-2.3.7-4.7x.alpha.rpm
b4d37fb0fda2fa6606befda4cbd7d458 7.0/en/os/i386/xinetd-2.3.7-4.7x.i386.rpm
38b5f218a384a7ba7cdc0168e2d5f892 7.1/en/os/SRPMS/xinetd-2.3.7-4.7x.src.rpm
ee9c54046762e1b3aa53d66da927f9ce 7.1/en/os/alpha/xinetd-2.3.7-4.7x.alpha.rpm
b4d37fb0fda2fa6606befda4cbd7d458 7.1/en/os/i386/xinetd-2.3.7-4.7x.i386.rpm
569ae16839959297a167bf29e1fb5293 7.1/en/os/ia64/xinetd-2.3.7-4.7x.ia64.rpm
38b5f218a384a7ba7cdc0168e2d5f892 7.2/en/os/SRPMS/xinetd-2.3.7-4.7x.src.rpm
b4d37fb0fda2fa6606befda4cbd7d458 7.2/en/os/i386/xinetd-2.3.7-4.7x.i386.rpm
569ae16839959297a167bf29e1fb5293 7.2/en/os/ia64/xinetd-2.3.7-4.7x.ia64.rpm
38b5f218a384a7ba7cdc0168e2d5f892 7.3/en/os/SRPMS/xinetd-2.3.7-4.7x.src.rpm
b4d37fb0fda2fa6606befda4cbd7d458 7.3/en/os/i386/xinetd-2.3.7-4.7x.i386.rpm
07c7f1cedf7b9a20bad65815765d4ff2 8.0/en/os/SRPMS/xinetd-2.3.7-5.src.rpm
26e6f6faec33503f3538a4ac80c82ce2 8.0/en/os/i386/xinetd-2.3.7-5.i386.rpm
These packages are GPG signed by Red Hat, Inc. for security. Our key
is available at http://www.redhat.com/about/contact/pgpkey.html
You can verify each package with the following command:
rpm --checksig -v <filename>
If you only wish to verify that each package has not been corrupted or
tampered with, examine only the md5sum with the following command:
md5sum <filename>
8. References:
http://www.xinetd.org/
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0871
9. Contact:
The Red Hat security contact is <security@redhat.com>. More contact
details at http://www.redhat.com/solutions/security/news/contact.html
Copyright(c) 2000, 2001, 2002 Red Hat, Inc.
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