SUSE Security Announcement: glibc (SUSE-SA:2010:052)
Posted on: 10/28/2010 11:09 AM

A glibc update is available for openSUSE and Suse Enterprise

_____________________________________________________________________________

SUSE Security Announcement

Package: glibc
Announcement ID: SUSE-SA:2010:052
Date: Thu, 28 Oct 2010 09:00:00 +0000
Affected Products: openSUSE 11.1
openSUSE 11.2
openSUSE 11.3
SLE SDK 10 SP3
SUSE Linux Enterprise Desktop 10 SP3
SUSE Linux Enterprise Server 10 SP3
SUSE Linux Enterprise Software Development Kit 11
SUSE Linux Enterprise Desktop 11
SUSE Linux Enterprise Server 11
SUSE Linux Enterprise Software Development Kit 11 SP1
SUSE Linux Enterprise Desktop 11 SP1
SUSE Linux Enterprise Server 11 SP1
Vulnerability Type: local privilege escalation
CVSS v2 Base Score: 7.2 (AV:L/AC:L/Au:N/C:C/I:C/A:C)
SUSE Default Package: yes
Cross-References: CVE-2008-1391, CVE-2010-0015, CVE-2010-0296
CVE-2010-0830, CVE-2010-3847, CVE-2010-3856

Content of This Advisory:
1) Security Vulnerability Resolved:
glibc local privilege escalation problem
Problem Description
2) Solution or Work-Around
3) Special Instructions and Notes
4) Package Location and Checksums
5) Pending Vulnerabilities, Solutions, and Work-Arounds:
See SUSE Security Summary Report.
6) Authenticity Verification and Additional Information

______________________________________________________________________________

1) Problem Description and Brief Discussion

The Linux C library glibc was updated to fix critical security issues and several bugs:

CVE-2010-3847: Decoding of the $ORIGIN special value in various LD_
environment variables allowed local attackers to execute code in
context of e.g. setuid root programs, elevating privileges.
This specific issue did not affect SUSE as an assertion triggers
before the respective code is executed. The bug was fixed by this
update nevertheless.

CVE-2010-3856: The LD_AUDIT environment was not pruned during setuid
root execution and could load shared libraries from standard system
library paths.
This could be used by local attackers to inject code into setuid root
programs and so elevated privileges.

Both of these were found by Tavis Ormandy and we thank him for finding
and reporting those issues.



SUSE Linux Enterprise Server 9 is not affected by the above problems,
as its glibc does neither support LD_AUDIT nor the $ORIGIN expansion
required by the first problem.

On openSUSE 11.1, 11.2 and SUSE Linux Enterprise 10 Service Pack 3
and SUSE Linux Enterprise 11 GA also the following minor security
issues were fixed:

CVE-2010-0830: Integer overflow causing arbitrary code execution
in ld.so --verify mode could be induced by a specially crafted
binary. This would require running the code on untrusted code which
we did not consider likely.

We thank Dan Rosenberg for reporting this problem.

CVE-2010-0296: The addmntent() function would not escape the newline
character properly, allowing the user to insert arbitrary newlines
to the /etc/mtab; if the addmntent() is run by a setuid mount binary
that does not do extra input check, this would allow custom entries
to be inserted in /etc/mtab.

We thank Dan Rosenberg and Jeff Layton for reporting this problem.


CVE-2008-1391: The strfmon() function contains an integer overflow
vulnerability in width specifiers handling that could be triggered
by an attacker that can control the format string passed to strfmon().

We thank Maksymilian Arciemowicz for reporting this problem.


CVE-2010-0015: Some setups (mainly Solaris-based legacy setups)
include shadow information (password hashes) as so-called "adjunct
passwd" table, mangling it with the rest of passwd columns instead
of keeping it in the shadow table. Normally, Solaris will disclose
this information only to clients bound to a privileged port, but
when nscd is deployed on the client, getpwnam() would disclose the
password hashes to all users. New mode "adjunct as shadow" can now
be enabled in /etc/default/nss that will move the password hashes
from the world-readable passwd table to emulated shadow table (that
is not cached by nscd).

We thank Christoph Pleger for reporting this problem.

2) Solution or Work-Around

There is no known workaround, please install the update packages.

3) Special Instructions and Notes

A reboot is not required to activate this change.

However as old processes will still be using the old C library, a reboot
is at least recommended.
4) Package Location and Checksums

The preferred method for installing security updates is to use the YaST
"Online Update" module or the "zypper" commandline tool. The package and
patch management stack will detect which updates are required and
automatically perform the necessary steps to verify and install them.

Alternatively, download the update packages for your distribution manually
and verify their integrity by the methods listed in Section 6 of this
announcement. Then install the packages using the command

rpm -Fhv

to apply the update, replacing with the filename of the
downloaded RPM package.


x86 Platform:

openSUSE 11.3:
http://download.opensuse.org/update/11.3/rpm/i586/glibc-2.11.2-3.3.1.i586.rpm
http://download.opensuse.org/update/11.3/rpm/i586/glibc-devel-2.11.2-3.3.1.i586.rpm
http://download.opensuse.org/update/11.3/rpm/i586/glibc-html-2.11.2-3.3.1.i586.rpm
http://download.opensuse.org/update/11.3/rpm/i586/glibc-i18ndata-2.11.2-3.3.1.i586.rpm
http://download.opensuse.org/update/11.3/rpm/i586/glibc-info-2.11.2-3.3.1.i586.rpm
http://download.opensuse.org/update/11.3/rpm/i586/glibc-locale-2.11.2-3.3.1.i586.rpm
http://download.opensuse.org/update/11.3/rpm/i586/glibc-obsolete-2.11.2-3.3.1.i586.rpm
http://download.opensuse.org/update/11.3/rpm/i586/glibc-profile-2.11.2-3.3.1.i586.rpm
http://download.opensuse.org/update/11.3/rpm/i586/nscd-2.11.2-3.3.1.i586.rpm

openSUSE 11.2:
http://download.opensuse.org/update/11.2/rpm/i586/glibc-2.10.1-10.9.1.i586.rpm
http://download.opensuse.org/update/11.2/rpm/i586/glibc-devel-2.10.1-10.9.1.i586.rpm
http://download.opensuse.org/update/11.2/rpm/i586/glibc-html-2.10.1-10.9.1.i586.rpm
http://download.opensuse.org/update/11.2/rpm/i586/glibc-i18ndata-2.10.1-10.9.1.i586.rpm
http://download.opensuse.org/update/11.2/rpm/i586/glibc-info-2.10.1-10.9.1.i586.rpm
http://download.opensuse.org/update/11.2/rpm/i586/glibc-locale-2.10.1-10.9.1.i586.rpm
http://download.opensuse.org/update/11.2/rpm/i586/glibc-obsolete-2.10.1-10.9.1.i586.rpm
http://download.opensuse.org/update/11.2/rpm/i586/glibc-profile-2.10.1-10.9.1.i586.rpm
http://download.opensuse.org/update/11.2/rpm/i586/nscd-2.10.1-10.9.1.i586.rpm

openSUSE 11.1:
http://download.opensuse.org/update/11.1/rpm/i586/glibc-2.9-2.13.1.i586.rpm
http://download.opensuse.org/update/11.1/rpm/i586/glibc-devel-2.9-2.13.1.i586.rpm
http://download.opensuse.org/update/11.1/rpm/i586/glibc-html-2.9-2.13.1.i586.rpm
http://download.opensuse.org/update/11.1/rpm/i586/glibc-i18ndata-2.9-2.13.1.i586.rpm
http://download.opensuse.org/update/11.1/rpm/i586/glibc-info-2.9-2.13.1.i586.rpm
http://download.opensuse.org/update/11.1/rpm/i586/glibc-locale-2.9-2.13.1.i586.rpm
http://download.opensuse.org/update/11.1/rpm/i586/glibc-obsolete-2.9-2.13.1.i586.rpm
http://download.opensuse.org/update/11.1/rpm/i586/glibc-profile-2.9-2.13.1.i586.rpm
http://download.opensuse.org/update/11.1/rpm/i586/nscd-2.9-2.13.1.i586.rpm

x86 Platform:

openSUSE 11.3:
http://download.opensuse.org/update/11.3/rpm/i686/glibc-2.11.2-3.3.1.i686.rpm
http://download.opensuse.org/update/11.3/rpm/i686/glibc-devel-2.11.2-3.3.1.i686.rpm

openSUSE 11.2:
http://download.opensuse.org/update/11.2/rpm/i686/glibc-2.10.1-10.9.1.i686.rpm
http://download.opensuse.org/update/11.2/rpm/i686/glibc-devel-2.10.1-10.9.1.i686.rpm

openSUSE 11.1:
http://download.opensuse.org/update/11.1/rpm/i686/glibc-2.9-2.13.1.i686.rpm
http://download.opensuse.org/update/11.1/rpm/i686/glibc-devel-2.9-2.13.1.i686.rpm
http://download.opensuse.org/update/11.1/rpm/i686/glibc-html-2.9-2.13.1.i686.rpm
http://download.opensuse.org/update/11.1/rpm/i686/glibc-i18ndata-2.9-2.13.1.i686.rpm
http://download.opensuse.org/update/11.1/rpm/i686/glibc-info-2.9-2.13.1.i686.rpm
http://download.opensuse.org/update/11.1/rpm/i686/glibc-locale-2.9-2.13.1.i686.rpm
http://download.opensuse.org/update/11.1/rpm/i686/glibc-obsolete-2.9-2.13.1.i686.rpm
http://download.opensuse.org/update/11.1/rpm/i686/glibc-profile-2.9-2.13.1.i686.rpm
http://download.opensuse.org/update/11.1/rpm/i686/nscd-2.9-2.13.1.i686.rpm

Power PC Platform:

openSUSE 11.1:
http://download.opensuse.org/update/11.1/rpm/ppc/glibc-2.9-2.13.1.ppc.rpm
http://download.opensuse.org/update/11.1/rpm/ppc/glibc-64bit-2.9-2.13.1.ppc.rpm
http://download.opensuse.org/update/11.1/rpm/ppc/glibc-devel-2.9-2.13.1.ppc.rpm
http://download.opensuse.org/update/11.1/rpm/ppc/glibc-devel-64bit-2.9-2.13.1.ppc.rpm
http://download.opensuse.org/update/11.1/rpm/ppc/glibc-html-2.9-2.13.1.ppc.rpm
http://download.opensuse.org/update/11.1/rpm/ppc/glibc-i18ndata-2.9-2.13.1.ppc.rpm
http://download.opensuse.org/update/11.1/rpm/ppc/glibc-info-2.9-2.13.1.ppc.rpm
http://download.opensuse.org/update/11.1/rpm/ppc/glibc-locale-2.9-2.13.1.ppc.rpm
http://download.opensuse.org/update/11.1/rpm/ppc/glibc-locale-64bit-2.9-2.13.1.ppc.rpm
http://download.opensuse.org/update/11.1/rpm/ppc/glibc-obsolete-2.9-2.13.1.ppc.rpm
http://download.opensuse.org/update/11.1/rpm/ppc/glibc-profile-2.9-2.13.1.ppc.rpm
http://download.opensuse.org/update/11.1/rpm/ppc/glibc-profile-64bit-2.9-2.13.1.ppc.rpm
http://download.opensuse.org/update/11.1/rpm/ppc/nscd-2.9-2.13.1.ppc.rpm

x86-64 Platform:

openSUSE 11.3:
http://download.opensuse.org/update/11.3/rpm/x86_64/glibc-2.11.2-3.3.1.x86_64.rpm
http://download.opensuse.org/update/11.3/rpm/x86_64/glibc-32bit-2.11.2-3.3.1.x86_64.rpm
http://download.opensuse.org/update/11.3/rpm/x86_64/glibc-devel-2.11.2-3.3.1.x86_64.rpm
http://download.opensuse.org/update/11.3/rpm/x86_64/glibc-devel-32bit-2.11.2-3.3.1.x86_64.rpm
http://download.opensuse.org/update/11.3/rpm/x86_64/glibc-html-2.11.2-3.3.1.x86_64.rpm
http://download.opensuse.org/update/11.3/rpm/x86_64/glibc-i18ndata-2.11.2-3.3.1.x86_64.rpm
http://download.opensuse.org/update/11.3/rpm/x86_64/glibc-info-2.11.2-3.3.1.x86_64.rpm
http://download.opensuse.org/update/11.3/rpm/x86_64/glibc-locale-2.11.2-3.3.1.x86_64.rpm
http://download.opensuse.org/update/11.3/rpm/x86_64/glibc-locale-32bit-2.11.2-3.3.1.x86_64.rpm
http://download.opensuse.org/update/11.3/rpm/x86_64/glibc-obsolete-2.11.2-3.3.1.x86_64.rpm
http://download.opensuse.org/update/11.3/rpm/x86_64/glibc-profile-2.11.2-3.3.1.x86_64.rpm
http://download.opensuse.org/update/11.3/rpm/x86_64/glibc-profile-32bit-2.11.2-3.3.1.x86_64.rpm
http://download.opensuse.org/update/11.3/rpm/x86_64/nscd-2.11.2-3.3.1.x86_64.rpm

openSUSE 11.2:
http://download.opensuse.org/update/11.2/rpm/x86_64/glibc-2.10.1-10.9.1.x86_64.rpm
http://download.opensuse.org/update/11.2/rpm/x86_64/glibc-32bit-2.10.1-10.9.1.x86_64.rpm
http://download.opensuse.org/update/11.2/rpm/x86_64/glibc-devel-2.10.1-10.9.1.x86_64.rpm
http://download.opensuse.org/update/11.2/rpm/x86_64/glibc-devel-32bit-2.10.1-10.9.1.x86_64.rpm
http://download.opensuse.org/update/11.2/rpm/x86_64/glibc-html-2.10.1-10.9.1.x86_64.rpm
http://download.opensuse.org/update/11.2/rpm/x86_64/glibc-i18ndata-2.10.1-10.9.1.x86_64.rpm
http://download.opensuse.org/update/11.2/rpm/x86_64/glibc-info-2.10.1-10.9.1.x86_64.rpm
http://download.opensuse.org/update/11.2/rpm/x86_64/glibc-locale-2.10.1-10.9.1.x86_64.rpm
http://download.opensuse.org/update/11.2/rpm/x86_64/glibc-locale-32bit-2.10.1-10.9.1.x86_64.rpm
http://download.opensuse.org/update/11.2/rpm/x86_64/glibc-obsolete-2.10.1-10.9.1.x86_64.rpm
http://download.opensuse.org/update/11.2/rpm/x86_64/glibc-profile-2.10.1-10.9.1.x86_64.rpm
http://download.opensuse.org/update/11.2/rpm/x86_64/glibc-profile-32bit-2.10.1-10.9.1.x86_64.rpm
http://download.opensuse.org/update/11.2/rpm/x86_64/nscd-2.10.1-10.9.1.x86_64.rpm

openSUSE 11.1:
http://download.opensuse.org/update/11.1/rpm/x86_64/glibc-2.9-2.13.1.x86_64.rpm
http://download.opensuse.org/update/11.1/rpm/x86_64/glibc-32bit-2.9-2.13.1.x86_64.rpm
http://download.opensuse.org/update/11.1/rpm/x86_64/glibc-devel-2.9-2.13.1.x86_64.rpm
http://download.opensuse.org/update/11.1/rpm/x86_64/glibc-devel-32bit-2.9-2.13.1.x86_64.rpm
http://download.opensuse.org/update/11.1/rpm/x86_64/glibc-html-2.9-2.13.1.x86_64.rpm
http://download.opensuse.org/update/11.1/rpm/x86_64/glibc-i18ndata-2.9-2.13.1.x86_64.rpm
http://download.opensuse.org/update/11.1/rpm/x86_64/glibc-info-2.9-2.13.1.x86_64.rpm
http://download.opensuse.org/update/11.1/rpm/x86_64/glibc-locale-2.9-2.13.1.x86_64.rpm
http://download.opensuse.org/update/11.1/rpm/x86_64/glibc-locale-32bit-2.9-2.13.1.x86_64.rpm
http://download.opensuse.org/update/11.1/rpm/x86_64/glibc-obsolete-2.9-2.13.1.x86_64.rpm
http://download.opensuse.org/update/11.1/rpm/x86_64/glibc-profile-2.9-2.13.1.x86_64.rpm
http://download.opensuse.org/update/11.1/rpm/x86_64/glibc-profile-32bit-2.9-2.13.1.x86_64.rpm
http://download.opensuse.org/update/11.1/rpm/x86_64/nscd-2.9-2.13.1.x86_64.rpm

Sources:

openSUSE 11.3:
http://download.opensuse.org/update/11.3/rpm/src/glibc-2.11.2-3.3.1.nosrc.rpm
http://download.opensuse.org/update/11.3/rpm/src/glibc-2.11.2-3.3.1.src.rpm

openSUSE 11.2:
http://download.opensuse.org/update/11.2/rpm/src/glibc-2.10.1-10.9.1.nosrc.rpm
http://download.opensuse.org/update/11.2/rpm/src/glibc-2.10.1-10.9.1.src.rpm

openSUSE 11.1:
http://download.opensuse.org/update/11.1/rpm/src/glibc-2.9-2.13.1.src.rpm

Our maintenance customers are notified individually. The packages are
offered for installation from the maintenance web:

SLE SDK 10 SP3
http://download.novell.com/patch/finder/?keywords=a7e1bffd1e2cae6bb5c9bbff3d3f9de2

SUSE Linux Enterprise Server 10 SP3
http://download.novell.com/patch/finder/?keywords=a7e1bffd1e2cae6bb5c9bbff3d3f9de2

SUSE Linux Enterprise Desktop 10 SP3
http://download.novell.com/patch/finder/?keywords=a7e1bffd1e2cae6bb5c9bbff3d3f9de2

SUSE Linux Enterprise Server 11
http://download.novell.com/patch/finder/?keywords=5f11ad23d76a12882072f1f4032fd9a4
http://download.novell.com/patch/finder/?keywords=0582518152cdc4496cbc5acb4f10c30c

SUSE Linux Enterprise Desktop 11
http://download.novell.com/patch/finder/?keywords=0582518152cdc4496cbc5acb4f10c30c

SUSE Linux Enterprise Software Development Kit 11
http://download.novell.com/patch/finder/?keywords=0582518152cdc4496cbc5acb4f10c30c

SUSE Linux Enterprise Server 11 SP1
http://download.novell.com/patch/finder/?keywords=23bdb7f8171760d0a927cc00885b6d96

SUSE Linux Enterprise Desktop 11 SP1
http://download.novell.com/patch/finder/?keywords=23bdb7f8171760d0a927cc00885b6d96

SUSE Linux Enterprise Software Development Kit 11 SP1
http://download.novell.com/patch/finder/?keywords=23bdb7f8171760d0a927cc00885b6d96

______________________________________________________________________________

5) Pending Vulnerabilities, Solutions, and Work-Arounds:

See SUSE Security Summary Report.
______________________________________________________________________________

6) Authenticity Verification and Additional Information

- Announcement authenticity verification:

SUSE security announcements are published via mailing lists and on Web
sites. The authenticity and integrity of a SUSE security announcement is
guaranteed by a cryptographic signature in each announcement. All SUSE
security announcements are published with a valid signature.

To verify the signature of the announcement, save it as text into a file
and run the command

gpg --verify

replacing with the name of the file where you saved the
announcement. The output for a valid signature looks like:

gpg: Signature made using RSA key ID 3D25D3D9
gpg: Good signature from "SuSE Security Team "

where is replaced by the date the document was signed.

If the security team's key is not contained in your key ring, you can
import it from the first installation CD. To import the key, use the
command

gpg --import gpg-pubkey-3d25d3d9-36e12d04.asc

- Package authenticity verification:

SUSE update packages are available on many mirror FTP servers all over the
world. While this service is considered valuable and important to the free
and open source software community, the authenticity and the integrity of
a package needs to be verified to ensure that it has not been tampered
with.

The internal rpm package signatures provide an easy way to verify the
authenticity of an RPM package. Use the command

rpm -v --checksig

to verify the signature of the package, replacing with the
filename of the RPM package downloaded. The package is unmodified if it
contains a valid signature from build@suse.de with the key ID 9C800ACA.

This key is automatically imported into the RPM database (on
RPMv4-based distributions) and the gpg key ring of 'root' during
installation. You can also find it on the first installation CD and at
the end of this announcement.

- SUSE runs two security mailing lists to which any interested party may
subscribe:

opensuse-security@opensuse.org
- General Linux and SUSE security discussion.
All SUSE security announcements are sent to this list.
To subscribe, send an e-mail to
.

opensuse-security-announce@opensuse.org
- SUSE's announce-only mailing list.
Only SUSE's security announcements are sent to this list.
To subscribe, send an e-mail to
.



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