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Mandriva Linux Security Advisory 2013-054

Mandriva Linux Security Advisory 2013-054
Posted Apr 7, 2013
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2013-054 - A flaw exists in the IP network matching code in sudo versions 1.6.9p3 through 1.8.4p4 that may result in the local host being matched even though it is not actually part of the network described by the IP address and associated netmask listed in the sudoers file or in LDAP. As a result, users authorized to run commands on certain IP networks may be able to run commands on hosts that belong to other networks not explicitly listed in sudoers. sudo 1.6.0 through 1.7.10p6 and sudo 1.8.0 through 1.8.6p6 allows local users or physically-proximate attackers to bypass intended time restrictions and retain privileges without re-authenticating by setting the system clock and sudo user timestamp to the epoch. Sudo before 1.8.6p7 allows a malicious user to run commands via sudo without authenticating, so long as there exists a terminal the user has access to where a sudo command was successfully run by that same user within the password timeout period. The updated packages have been patched to correct these issues.

tags | advisory, local
systems | linux, mandriva
advisories | CVE-2012-2337, CVE-2013-1775, CVE-2013-1776
SHA-256 | 1c65aaaffdb72581984d2276efcf089189ca0ea9517d048d794210853c4a68ca

Mandriva Linux Security Advisory 2013-054

Change Mirror Download
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Hash: SHA1

_______________________________________________________________________

Mandriva Linux Security Advisory MDVSA-2013:054
http://www.mandriva.com/en/support/security/
_______________________________________________________________________

Package : sudo
Date : April 5, 2013
Affected: Business Server 1.0
_______________________________________________________________________

Problem Description:

Multiple vulnerabilities has been found and corrected in sudo:

A flaw exists in the IP network matching code in sudo versions 1.6.9p3
through 1.8.4p4 that may result in the local host being matched
even though it is not actually part of the network described by the
IP address and associated netmask listed in the sudoers file or in
LDAP. As a result, users authorized to run commands on certain IP
networks may be able to run commands on hosts that belong to other
networks not explicitly listed in sudoers (CVE-2012-2337).

sudo 1.6.0 through 1.7.10p6 and sudo 1.8.0 through 1.8.6p6 allows
local users or physically-proximate attackers to bypass intended time
restrictions and retain privileges without re-authenticating by setting
the system clock and sudo user timestamp to the epoch (CVE-2013-1775).

Sudo before 1.8.6p7 allows a malicious user to run commands via
sudo without authenticating, so long as there exists a terminal the
user has access to where a sudo command was successfully run by that
same user within the password timeout period (usually five minutes)
(CVE-2013-1776).

The updated packages have been patched to correct these issues.
_______________________________________________________________________

References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-2337
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-1775
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-1776
http://www.sudo.ws/sudo/alerts/netmask.html
http://www.sudo.ws/sudo/alerts/epoch_ticket.html
http://www.sudo.ws/sudo/alerts/tty_tickets.html
_______________________________________________________________________

Updated Packages:

Mandriva Business Server 1/X86_64:
19aae8be2f1e4cc9d8e188a2d8147e99 mbs1/x86_64/sudo-1.8.3p2-2.1.mbs1.x86_64.rpm
13e0fd85e811c76b8863fa6d12889636 mbs1/x86_64/sudo-devel-1.8.3p2-2.1.mbs1.x86_64.rpm
922d319a0f3c78d10c1ca7be22141821 mbs1/SRPMS/sudo-1.8.3p2-2.1.mbs1.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/en/support/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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