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Mandriva Linux Security Advisory 2011-018

Mandriva Linux Security Advisory 2011-018
Posted Jan 21, 2011
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2011-018 - A patch for parse.c in sudo does not properly interpret a system group in the sudoers file during authorization decisions for a user who belongs to that group, which allows local users to leverage an applicable sudoers file and gain root privileges via a sudo command. NOTE: this vulnerability exists because of a CVE-2009-0034 regression. check.c in sudo 1.7.x before 1.7.4p5, when a Runas group is configured, does not require a password for command execution that involves a gid change but no uid change, which allows local users to bypass an intended authentication requirement via the -g option to a sudo command.

tags | advisory, local, root
systems | linux, mandriva
advisories | CVE-2011-0008, CVE-2011-0010
SHA-256 | d8fd379e68953f4a687be7bb6ecff5da28e252ae6870a740003011ee2ac4751e

Mandriva Linux Security Advisory 2011-018

Change Mirror Download
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Hash: SHA1

_______________________________________________________________________

Mandriva Linux Security Advisory MDVSA-2011:018
http://www.mandriva.com/security/
_______________________________________________________________________

Package : sudo
Date : January 21, 2011
Affected: 2009.0, 2010.0, 2010.1, Enterprise Server 5.0
_______________________________________________________________________

Problem Description:

Multiple vulnerabilities has been found and corrected in sudo:

A a patch for parse.c in sudo does not properly interpret a system
group (aka %group) in the sudoers file during authorization decisions
for a user who belongs to that group, which allows local users to
leverage an applicable sudoers file and gain root privileges via a sudo
command. NOTE: this vulnerability exists because of a CVE-2009-0034
regression (CVE-2011-0008).

check.c in sudo 1.7.x before 1.7.4p5, when a Runas group is configured,
does not require a password for command execution that involves a
gid change but no uid change, which allows local users to bypass an
intended authentication requirement via the -g option to a sudo command
(CVE-2011-0010).

Packages for 2009.0 are provided as of the Extended Maintenance
Program. Please visit this link to learn more:
http://store.mandriva.com/product_info.php?cPath=149&products_id=490

The updated packages have been upgraded to the latest versions
(1.7.4p6) which is not affected by these issues.
_______________________________________________________________________

References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-0008
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-0010
_______________________________________________________________________

Updated Packages:

Mandriva Linux 2009.0:
f85924e31c3d3b3603373c9c28760046 2009.0/i586/sudo-1.7.4p6-0.1mdv2009.0.i586.rpm
b458afb1e2d4bf6a9a3f946baef66fb8 2009.0/SRPMS/sudo-1.7.4p6-0.1mdv2009.0.src.rpm

Mandriva Linux 2009.0/X86_64:
abbbaeda5baa10b2fb5b9dbabbf7876d 2009.0/x86_64/sudo-1.7.4p6-0.1mdv2009.0.x86_64.rpm
b458afb1e2d4bf6a9a3f946baef66fb8 2009.0/SRPMS/sudo-1.7.4p6-0.1mdv2009.0.src.rpm

Mandriva Linux 2010.0:
5a90501c30b2bdbf0fe8875968f03342 2010.0/i586/sudo-1.7.4p6-0.1mdv2010.0.i586.rpm
2fb1abfa36749d38d986292269fa2ace 2010.0/SRPMS/sudo-1.7.4p6-0.1mdv2010.0.src.rpm

Mandriva Linux 2010.0/X86_64:
402b755280cab7a5240b5e26f463d35a 2010.0/x86_64/sudo-1.7.4p6-0.1mdv2010.0.x86_64.rpm
2fb1abfa36749d38d986292269fa2ace 2010.0/SRPMS/sudo-1.7.4p6-0.1mdv2010.0.src.rpm

Mandriva Linux 2010.1:
2b8f0a4167c5e7d9e5225d635ed8acdc 2010.1/i586/sudo-1.7.4p6-0.1mdv2010.2.i586.rpm
d6997b0444b370736a193546a81c7d06 2010.1/SRPMS/sudo-1.7.4p6-0.1mdv2010.2.src.rpm

Mandriva Linux 2010.1/X86_64:
8399b03348c79e9a1bfb5566f0e33aee 2010.1/x86_64/sudo-1.7.4p6-0.1mdv2010.2.x86_64.rpm
d6997b0444b370736a193546a81c7d06 2010.1/SRPMS/sudo-1.7.4p6-0.1mdv2010.2.src.rpm

Mandriva Enterprise Server 5:
c03ff4f1c811e18a3a400ada52a8300d mes5/i586/sudo-1.7.4p6-0.1mdvmes5.1.i586.rpm
945432ec0af5e430e9e428def438e295 mes5/SRPMS/sudo-1.7.4p6-0.1mdvmes5.1.src.rpm

Mandriva Enterprise Server 5/X86_64:
3bd5e4ddc536d59ea206a8450c780bbc mes5/x86_64/sudo-1.7.4p6-0.1mdvmes5.1.x86_64.rpm
945432ec0af5e430e9e428def438e295 mes5/SRPMS/sudo-1.7.4p6-0.1mdvmes5.1.src.rpm
_______________________________________________________________________

To upgrade automatically use MandrivaUpdate or urpmi. The verification
of md5 checksums and GPG signatures is performed automatically for you.

All packages are signed by Mandriva for security. You can obtain the
GPG public key of the Mandriva Security Team by executing:

gpg --recv-keys --keyserver pgp.mit.edu 0x22458A98

You can view other update advisories for Mandriva Linux at:

http://www.mandriva.com/security/advisories

If you want to report vulnerabilities, please contact

security_(at)_mandriva.com
_______________________________________________________________________

Type Bits/KeyID Date User ID
pub 1024D/22458A98 2000-07-10 Mandriva Security Team
<security*mandriva.com>
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