RedHat: Important: alsa-lib security update
Posted by Benjamin D. Thomas   
RedHat Linux An updated alsa-lib package that fixes a flaw that disabled stack execution protection is now available for Red Hat Enterprise Linux 4. This update has been rated as having important security impact by the Red Hat Security Response Team.
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                   Red Hat Security Advisory

Synopsis:          Important: alsa-lib security update
Advisory ID:       RHSA-2005:033-01
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2005-033.html
Issue date:        2005-02-15
Updated on:        2005-02-15
Product:           Red Hat Enterprise Linux
CVE Names:         CAN-2005-0087
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1. Summary:

An updated alsa-lib package that fixes a flaw that disabled stack execution
protection is now available for Red Hat Enterprise Linux 4.

This update has been rated as having important security impact by the Red Hat
Security Response Team.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS version 4 - i386, ia64, ppc, ppc64, s390, s390x, x86_64
Red Hat Enterprise Linux Desktop version 4 - i386, x86_64
Red Hat Enterprise Linux ES version 4 - i386, ia64, x86_64
Red Hat Enterprise Linux WS version 4 - i386, ia64, x86_64

3. Problem description:

The alsa-lib package provides a library of functions for communication with
kernel sound drivers.

A flaw in the alsa mixer code was discovered that caused stack
execution protection to be disabled for the libasound.so library.  
The effect of this flaw is that stack execution protection, through NX or
Exec-Shield, would be disabled for any application linked to libasound. 
The Common Vulnerabilities and Exposures project (cve.mitre.org) has
assigned the name CAN-2005-0087 to this issue

Users are advised to upgrade to this updated package, which contains a
patched version of the library which correctly enables stack execution
protection.

4. Solution:

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.  Use Red Hat
Network to download and update your packages.  To launch the Red Hat
Update Agent, use the following command:

    up2date

For information on how to install packages manually, refer to the
following Web page for the System Administration or Customization
guide specific to your system:

    http://www.redhat.com/docs/manuals/enterprise/

5. Bug IDs fixed (http://bugzilla.redhat.com/):

144518 - CAN-2005-0087 alsa-lib disables stack protection for it's users

6. RPMs required:

Red Hat Enterprise Linux AS version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/alsa-lib-1.0.6-5.RHEL4.src.rpm
4c4ffa9e77dcef4c1d45efc7b5e3932f  alsa-lib-1.0.6-5.RHEL4.src.rpm

i386:
15d551c0081c6b85c069b0bf9f3dfdb0  alsa-lib-1.0.6-5.RHEL4.i386.rpm
31b453b7305ebad6a469048501f780cf  alsa-lib-devel-1.0.6-5.RHEL4.i386.rpm

ia64:
666b5e0b9f08c3a0580fe46641dcf8b9  alsa-lib-1.0.6-5.RHEL4.ia64.rpm
15d551c0081c6b85c069b0bf9f3dfdb0  alsa-lib-1.0.6-5.RHEL4.i386.rpm
4179237adf07297536f5107cef76bfa4  alsa-lib-devel-1.0.6-5.RHEL4.ia64.rpm

ppc:
320bf92b231352c6cc27a147f33132bb  alsa-lib-1.0.6-5.RHEL4.ppc.rpm
d795c813312663606b58d2d4ca9bdca5  alsa-lib-devel-1.0.6-5.RHEL4.ppc.rpm

ppc64:
867682ad2b16a5c45d2b41ac6fcaf0f3  alsa-lib-1.0.6-5.RHEL4.ppc64.rpm
1e2e4caebd33ff05fe9c4ab37226cdd2  alsa-lib-devel-1.0.6-5.RHEL4.ppc64.rpm

s390:
463ffa6bc954c2362cd8cf16ee1804e1  alsa-lib-1.0.6-5.RHEL4.s390.rpm
1b42794cdc693591521cdf6fb2711fce  alsa-lib-devel-1.0.6-5.RHEL4.s390.rpm

s390x:
dc2930e6d9d7170dab5d490d73585abc  alsa-lib-1.0.6-5.RHEL4.s390x.rpm
463ffa6bc954c2362cd8cf16ee1804e1  alsa-lib-1.0.6-5.RHEL4.s390.rpm
a656d2b3293e00452d9e7414d8dc05e4  alsa-lib-devel-1.0.6-5.RHEL4.s390x.rpm

x86_64:
c852817cd45646e21d17f352f635a6cd  alsa-lib-1.0.6-5.RHEL4.x86_64.rpm
15d551c0081c6b85c069b0bf9f3dfdb0  alsa-lib-1.0.6-5.RHEL4.i386.rpm
abc62c50a283959b03d9439747b11a2f  alsa-lib-devel-1.0.6-5.RHEL4.x86_64.rpm

Red Hat Enterprise Linux Desktop version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/alsa-lib-1.0.6-5.RHEL4.src.rpm
4c4ffa9e77dcef4c1d45efc7b5e3932f  alsa-lib-1.0.6-5.RHEL4.src.rpm

i386:
15d551c0081c6b85c069b0bf9f3dfdb0  alsa-lib-1.0.6-5.RHEL4.i386.rpm
31b453b7305ebad6a469048501f780cf  alsa-lib-devel-1.0.6-5.RHEL4.i386.rpm

x86_64:
c852817cd45646e21d17f352f635a6cd  alsa-lib-1.0.6-5.RHEL4.x86_64.rpm
15d551c0081c6b85c069b0bf9f3dfdb0  alsa-lib-1.0.6-5.RHEL4.i386.rpm
abc62c50a283959b03d9439747b11a2f  alsa-lib-devel-1.0.6-5.RHEL4.x86_64.rpm

Red Hat Enterprise Linux ES version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/alsa-lib-1.0.6-5.RHEL4.src.rpm
4c4ffa9e77dcef4c1d45efc7b5e3932f  alsa-lib-1.0.6-5.RHEL4.src.rpm

i386:
15d551c0081c6b85c069b0bf9f3dfdb0  alsa-lib-1.0.6-5.RHEL4.i386.rpm
31b453b7305ebad6a469048501f780cf  alsa-lib-devel-1.0.6-5.RHEL4.i386.rpm

ia64:
666b5e0b9f08c3a0580fe46641dcf8b9  alsa-lib-1.0.6-5.RHEL4.ia64.rpm
15d551c0081c6b85c069b0bf9f3dfdb0  alsa-lib-1.0.6-5.RHEL4.i386.rpm
4179237adf07297536f5107cef76bfa4  alsa-lib-devel-1.0.6-5.RHEL4.ia64.rpm

x86_64:
c852817cd45646e21d17f352f635a6cd  alsa-lib-1.0.6-5.RHEL4.x86_64.rpm
15d551c0081c6b85c069b0bf9f3dfdb0  alsa-lib-1.0.6-5.RHEL4.i386.rpm
abc62c50a283959b03d9439747b11a2f  alsa-lib-devel-1.0.6-5.RHEL4.x86_64.rpm

Red Hat Enterprise Linux WS version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/alsa-lib-1.0.6-5.RHEL4.src.rpm
4c4ffa9e77dcef4c1d45efc7b5e3932f  alsa-lib-1.0.6-5.RHEL4.src.rpm

i386:
15d551c0081c6b85c069b0bf9f3dfdb0  alsa-lib-1.0.6-5.RHEL4.i386.rpm
31b453b7305ebad6a469048501f780cf  alsa-lib-devel-1.0.6-5.RHEL4.i386.rpm

ia64:
666b5e0b9f08c3a0580fe46641dcf8b9  alsa-lib-1.0.6-5.RHEL4.ia64.rpm
15d551c0081c6b85c069b0bf9f3dfdb0  alsa-lib-1.0.6-5.RHEL4.i386.rpm
4179237adf07297536f5107cef76bfa4  alsa-lib-devel-1.0.6-5.RHEL4.ia64.rpm

x86_64:
c852817cd45646e21d17f352f635a6cd  alsa-lib-1.0.6-5.RHEL4.x86_64.rpm
15d551c0081c6b85c069b0bf9f3dfdb0  alsa-lib-1.0.6-5.RHEL4.i386.rpm
abc62c50a283959b03d9439747b11a2f  alsa-lib-devel-1.0.6-5.RHEL4.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://www.redhat.com/security/team/key/#package

7. References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0087

8. Contact:

The Red Hat security contact is .  More contact
details at https://www.redhat.com/security/team/contact/

Copyright 2005 Red Hat, Inc.