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RedHat: 'squid' Remote DoS vulnerabilities Print E-mail
User Rating:      How can I rate this item?
Posted by LinuxSecurity.com Team   
RedHat Linux New squid packages are available that fix various vulnerabilities. Some ofthese vulnerabilities could be used to perform a denial of service (DoS)attack or allow remote users to execute code as the user squid.

---------------------------------------------------------------------
                   Red Hat, Inc. Red Hat Security Advisory

Synopsis:          New squid packages available
Advisory ID:       RHSA-2002:029-09
Issue date:        2002-02-19
Updated on:        2002-02-26
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. 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

3. 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.

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.Red Hat.com/bugzilla for more info):



6. RPMs required:

Red Hat Linux 6.2:

SRPMS: 
ftp://updates.Red Hat.com/6.2/en/os/SRPMS/squid-2.4.STABLE3-1.6.2.src.rpm

alpha: 
ftp://updates.Red Hat.com/6.2/en/os/alpha/squid-2.4.STABLE3-1.6.2.alpha.rpm

i386: 
ftp://updates.Red Hat.com/6.2/en/os/i386/squid-2.4.STABLE3-1.6.2.i386.rpm

sparc: 
ftp://updates.Red Hat.com/6.2/en/os/sparc/squid-2.4.STABLE3-1.6.2.sparc.rpm

Red Hat Linux 7.0:

SRPMS: 
ftp://updates.Red Hat.com/7.0/en/os/SRPMS/squid-2.4.STABLE3-1.7.0.src.rpm

alpha: 
ftp://updates.Red Hat.com/7.0/en/os/alpha/squid-2.4.STABLE3-1.7.0.alpha.rpm

i386: 
ftp://updates.Red Hat.com/7.0/en/os/i386/squid-2.4.STABLE3-1.7.0.i386.rpm

Red Hat Linux 7.1:

SRPMS: 
ftp://updates.Red Hat.com/7.1/en/os/SRPMS/squid-2.4.STABLE3-1.7.1.src.rpm

alpha: 
ftp://updates.Red Hat.com/7.1/en/os/alpha/squid-2.4.STABLE3-1.7.1.alpha.rpm

i386: 
ftp://updates.Red Hat.com/7.1/en/os/i386/squid-2.4.STABLE3-1.7.1.i386.rpm

ia64: 
ftp://updates.Red Hat.com/7.1/en/os/ia64/squid-2.4.STABLE3-1.7.1.ia64.rpm

Red Hat Linux 7.2:

SRPMS: 
ftp://updates.Red Hat.com/7.2/en/os/SRPMS/squid-2.4.STABLE3-1.7.2.src.rpm

i386: 
ftp://updates.Red Hat.com/7.2/en/os/i386/squid-2.4.STABLE3-1.7.2.i386.rpm

ia64: 
ftp://updates.Red Hat.com/7.2/en/os/ia64/squid-2.4.STABLE3-1.7.2.ia64.rpm



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
 

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

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

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 

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


Copyright(c) 2000, 2001 Red Hat, Inc.





 
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