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UNIRAS Brief - 117/04 - Three RedHat Security Briefings



 
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   UNIRAS (UK Govt CERT) Briefing Notice - 117/04 dated 11.03.04  Time: 13:10  
  UNIRAS is part of NISCC (National Infrastructure Security Co-ordination Centre)
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  UNIRAS material is also available from its website at www.uniras.gov.uk and
         Information about NISCC is available from www.niscc.gov.uk
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Title
=====

Three RedHat Security Briefings:

1. Updated kdelibs packages resolve cookie security issue.

2. Updated sysstat packages that fix various bugs and a minor security issue are now available.

3. Updated gdk-pixbuf packages fix denial of service vulnerability.




Detail
====== 

1. Flaws have been found in the cookie path handling between a number of Web browsers and 
servers.  The HTTP cookie standard allows a Web server supplying a cookie to a client to 
specify a subset of URLs on the origin server to which the cookie applies. 

2. Updated sysstat packages to fix various bugs.

3. Thomas Kristensen discovered a bitmap file that would cause the Evolution mail reader to crash.  This issue was caused by a flaw that affects versions of the gdk-pixbuf package prior to 0.20.  To exploit this flaw, a remote attacker could send (via email) a carefully- crafted BMP file, which would cause Evolution to crash.





1.

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                   Red Hat Security Advisory

Synopsis:          Updated kdelibs packages resolve cookie security issue
Advisory ID:       RHSA-2004:075-01
Issue date:        2004-03-10
Updated on:        2004-03-10
Product:           Red Hat Linux
Keywords:          
Cross references:  
Obsoletes:         
CVE Names:         CAN-2003-0592
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1. Topic:

Updated kdelibs packages that fix a flaw in cookie path handling are now available.

2. Relevant releases/architectures:

Red Hat Linux 9 - i386

3. Problem description:

Konqueror is a file manager and Web browser for the K Desktop Environment (KDE).

Flaws have been found in the cookie path handling between a number of Web browsers and servers.  The HTTP cookie standard allows a Web server supplying a cookie to a client to specify a subset of URLs on the origin server to which the cookie applies.  Web servers such as Apache do not filter returned cookies and assume that the client will only send back cookies for requests that fall within the server-supplied subset of URLs. However, by supplying URLs that use path traversal (/../) and character encoding, it is possible to fool many browsers into sending a cookie to a path outside of the originally-specified subset.

KDE version 3.1.3 and later include a patch to Konquerer that disables the sending of cookies to the server if the URL contains such encoded traversals.  Red Hat Linux 9 shipped with KDE 3.1 and is therefore vulnerable to this issue.

Users of Konquerer are advised to upgrade to these erratum packages, which contain a backported patch for 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.

If up2date fails to connect to Red Hat Network due to SSL Certificate 
Errors, you need to install a version of the up2date client with an updated 
certificate.  The latest version of up2date is available from the Red Hat 
FTP site and may also be downloaded directly from the RHN website:

https://rhn.redhat.com/help/latest-up2date.pxt

5. RPMs required:

Red Hat Linux 9:

SRPMS: ftp://updates.redhat.com/9/en/os/SRPMS/kdelibs-3.1-13.src.rpm

i386: ftp://updates.redhat.com/9/en/os/i386/kdelibs-3.1-13.i386.rpm
ftp://updates.redhat.com/9/en/os/i386/kdelibs-devel-3.1-13.i386.rpm



6. Verification:

MD5 sum                          Package Name
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c6160cfd6b412cd60c8a55abfdeac022 9/en/os/SRPMS/kdelibs-3.1-13.src.rpm
b54a0acde508064c10e87eb735b95543 9/en/os/i386/kdelibs-3.1-13.i386.rpm
dfee8cfc2b14117fb3d00908198849f3 9/en/os/i386/kdelibs-devel-3.1-13.i386.rpm

These packages are GPG signed by Red Hat for security.  Our key is available from https://www.redhat.com/security/keys.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>


7. References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0592

8. Contact:

The Red Hat security contact is <secalert@xxxxxxxxxx>.  More contact details at https://www.redhat.com/solutions/security/news/contact.html

Copyright 2003 Red Hat, Inc.
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2.


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                   Red Hat Security Advisory

Synopsis:          Updated sysstat packages fix security vulnerabilities
Advisory ID:       RHSA-2004:093-01
Issue date:        2004-03-10
Updated on:        2004-03-10
Product:           Red Hat Linux
Keywords:          
Cross references:  
Obsoletes:         
CVE Names:         CAN-2004-0107
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1. Topic:

Updated sysstat packages that fix various bugs and a minor security issue are now available.

2. Relevant releases/architectures:

Red Hat Linux 9 - i386

3. Problem description:

Sysstat is a tool for gathering system statistics. 

A bug was found in the Red Hat sysstat package post and trigger scripts, which used insecure temporary file names. A local attacker could overwrite system files using carefully-crafted symbolic links in the /tmp directory. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2004-0107 to this issue.

Other issues addressed in this advisory include:

* iostat -x should return all partitions on the system (up to a maximum of
1024)

* sar should handle network device names with more than 8 characters properly

Users of sysstat should upgrade to these updated packages, which contain patches to correct 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.

If up2date fails to connect to Red Hat Network due to SSL Certificate Errors, you need to install a version of the up2date client with an updated certificate.  The latest version of up2date is available from the Red Hat FTP site and may also be downloaded directly from the RHN website:

https://rhn.redhat.com/help/latest-up2date.pxt

5. RPMs required:

Red Hat Linux 9:

SRPMS: ftp://updates.redhat.com/9/en/os/SRPMS/sysstat-4.0.7-4.rhl9.1.src.rpm

i386: ftp://updates.redhat.com/9/en/os/i386/sysstat-4.0.7-4.rhl9.1.i386.rpm



6. Verification:

MD5 sum                          Package Name
- - - --------------------------------------------------------------------------

53b2bdd79619a4407478ef9cae8fdd22 9/en/os/SRPMS/sysstat-4.0.7-4.rhl9.1.src.rpm
3cc21e61f4aec6c820dc496cb476f834 9/en/os/i386/sysstat-4.0.7-4.rhl9.1.i386.rpm

These packages are GPG signed by Red Hat for security.  Our key is available from https://www.redhat.com/security/keys.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>


7. References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0107

8. Contact:

The Red Hat security contact is <secalert@xxxxxxxxxx>.  More contact details at https://www.redhat.com/solutions/security/news/contact.html

Copyright 2003 Red Hat, Inc.
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3.

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                   Red Hat Security Advisory

Synopsis:          Updated gdk-pixbuf packages fix denial of service vulnerability
Advisory ID:       RHSA-2004:102-01
Issue date:        2004-03-10
Updated on:        2004-03-10
Product:           Red Hat Linux
Keywords:          DoS
Cross references:  
Obsoletes:         
CVE Names:         CAN-2004-0111
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1. Topic:

Updated gdk-pixbuf packages that fix a denial of service vulnerability that could affect applications such as Evolution are now available.

2. Relevant releases/architectures:

Red Hat Linux 9 - i386

3. Problem description:

The gdk-pixbuf package contains an image loading library used with the 
GNOME GUI desktop environment.  In Red Hat Linux 9 this library is used by applications, such as Evolution, to load images.

Thomas Kristensen discovered a bitmap file that would cause the Evolution mail reader to crash.  This issue was caused by a flaw that affects versions of the gdk-pixbuf package prior to 0.20.  To exploit this flaw, a remote attacker could send (via email) a carefully-crafted BMP file, which would cause Evolution to crash.  The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2004-0111 to this issue.

Users are advised to upgrade to these updated packages containing gdk-pixbuf version 0.22, which is not vulnerable to 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.

If up2date fails to connect to Red Hat Network due to SSL Certificate 
Errors, you need to install a version of the up2date client with an updated 
certificate.  The latest version of up2date is available from the Red Hat 
FTP site and may also be downloaded directly from the RHN website:

https://rhn.redhat.com/help/latest-up2date.pxt

5. RPMs required:

Red Hat Linux 9:

SRPMS: ftp://updates.redhat.com/9/en/os/SRPMS/gdk-pixbuf-0.22.0-6.1.0.src.rpm

i386: ftp://updates.redhat.com/9/en/os/i386/gdk-pixbuf-0.22.0-6.1.0.i386.rpm
ftp://updates.redhat.com/9/en/os/i386/gdk-pixbuf-devel-0.22.0-6.1.0.i386.rpm
ftp://updates.redhat.com/9/en/os/i386/gdk-pixbuf-gnome-0.22.0-6.1.0.i386.rpm



6. Verification:

MD5 sum                          Package Name
- - - --------------------------------------------------------------------------

df19bd665aba2b00d36ced57aa4d6ffe 9/en/os/SRPMS/gdk-pixbuf-0.22.0-6.1.0.src.rpm
4b0dd19751fc5fdd00222e556af8bc02 9/en/os/i386/gdk-pixbuf-0.22.0-6.1.0.i386.rpm
73781fffcb9cb8109d0391454d821ecf 9/en/os/i386/gdk-pixbuf-devel-0.22.0-6.1.0.i386.rpm
38fe3fce4d19ea79df588f62182d3e26 9/en/os/i386/gdk-pixbuf-gnome-0.22.0-6.1.0.i386.rpm

These packages are GPG signed by Red Hat for security.  Our key is available from https://www.redhat.com/security/keys.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>


7. References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0111

8. Contact:

The Red Hat security contact is <secalert@xxxxxxxxxx>.  More contact details at https://www.redhat.com/solutions/security/news/contact.html

Copyright 2003 Red Hat, Inc.
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UNIRAS wishes to acknowledge the contributions of RedHat for the information 
contained in this Briefing. 
- - ----------------------------------------------------------------------------------
This Briefing contains the information released by the original author. Some 
of the information may have changed since it was released. If the vulnerability 
affects you, it may be prudent to retrieve the advisory from the canonical site 
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members and the community at large. 
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<End of UNIRAS Briefing>


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