Red Hat Linux Errata Advisory
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Synopsis	New squid packages available

Advisory ID	RHSA-2002:029-11

Issue Date	2002-02-19

Updated On	2002-03-14

Product	Red Hat Linux

Keywords	squid ftp htcp snmp

Cross References

Obsoletes	RHSA-2001:113

1. Topic:

New squid packages are available that fix various vulnerabilities. Some of
these vulnerabilities could be used to perform a denial of service (DoS)
attack or allow remote users to execute code as the user squid.

2. Problem description:

Squid is a high-performance proxy caching server. Various security issues
have been found in Squid up to and including version 2.4.STABLE2. These were:

- a memory leak in the SNMP code
- a crash on specially-formatted data in FTP URL parsing
- HTCP would still be active, even if it was disabled in the config file

These errata pacakges contain Squid version 2.4.STABLE3, which is not
vulnerable to these issues. It is recommended that all users of Squid
update to the fixed packages.

Note: SNMP support is disabled in the
default configuration of these packages (it was previously enabled).
If you need SNMP support, edit your squid configuration and change
the 'snmp_port' option; the default port for SNMP enabled-squid is
3401.

Thanks go to Jouko Pynnonen for notifying us of the FTP vulnerability and
to the Squid team for providing patches.

The Common Vulnerabilities and Exposures project (cve.mitre.org) has
assigned the names CAN-2002-0067, CAN-2002-0068, CAN-2002-0069 to these issues.

3. Bug IDs fixed: (see bugzilla for more information)

4. Relevant releases/architectures:

Red Hat Linux 6.2 - alpha, i386, sparc
Red Hat Linux 7.0 - alpha, i386
Red Hat Linux 7.1 - alpha, i386, ia64
Red Hat Linux 7.2 - i386, ia64, s390

5. RPMs required:

6. 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.

7. Verification:

MD5 sum                           Package Name
-------------------------------------------------------------------------
b3d4d0c9e53b01c19f700df9ce17d0e5 6.2/en/os/SRPMS/squid-2.4.STABLE3-1.6.2.src.rpm
17ef449e9a97d10cdbc3d120fdb50f2c 6.2/en/os/alpha/squid-2.4.STABLE3-1.6.2.alpha.rpm
c84cd128b04cb373fe32d7b2288db841 6.2/en/os/i386/squid-2.4.STABLE3-1.6.2.i386.rpm
9264d770d126b5b33cf9dd428bf1db14 6.2/en/os/sparc/squid-2.4.STABLE3-1.6.2.sparc.rpm
21dfdf2375a15cddcc51a2aaec7ca651 7.0/en/os/SRPMS/squid-2.4.STABLE3-1.7.0.src.rpm
40996e76071a5d4680a1d90335dd87e2 7.0/en/os/alpha/squid-2.4.STABLE3-1.7.0.alpha.rpm
0417cdb61da2d5d28da0d995976dce1d 7.0/en/os/i386/squid-2.4.STABLE3-1.7.0.i386.rpm
953d1e9e04b2a9efb94e4e74a99167a3 7.1/en/os/SRPMS/squid-2.4.STABLE3-1.7.1.src.rpm
61ad76cb69e47540ffe127b7dff99e5a 7.1/en/os/alpha/squid-2.4.STABLE3-1.7.1.alpha.rpm
7061c04ab2a0e97a284ced5a98bd2877 7.1/en/os/i386/squid-2.4.STABLE3-1.7.1.i386.rpm
ae562f0cc3db33cfb6c1a64612aa26bb 7.1/en/os/ia64/squid-2.4.STABLE3-1.7.1.ia64.rpm
72d271f03bf9fee7dc9ba2d4f94269d4 7.2/en/os/SRPMS/squid-2.4.STABLE3-1.7.2.src.rpm
0f8a1132399b4f149426c34f9203030f 7.2/en/os/i386/squid-2.4.STABLE3-1.7.2.i386.rpm
bdaa724f704c4f0f0530a19dd7081cac 7.2/en/os/ia64/squid-2.4.STABLE3-1.7.2.ia64.rpm
c81860b2bb0a472c978a94448aa97382 7.2/en/os/s390/squid-2.4.STABLE3-1.7.2.s390.rpm

These packages are GPG signed by Red Hat, Inc. for security. Our key is available at:
http://www.redhat.com/about/contact.html

You can verify each package with the following command: rpm --checksig 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: rpm --checksig --nogpg filename

Note that you need RPM >= 3.0 to check GnuPG keys.

8. References:

http://www.squid-cache.org/Versions/v2/2.4/bugs/
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0067
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0068
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0069

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