[ MDVSA-2013:178 ] nfs-utils

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Mandriva Linux Security Advisory MDVSA-2013:178
http://www.mandriva.com/en/support/security/

Package : nfs-utils
Date : June 25, 2013
Affected: Business Server 1.0

Problem Description:

Updated nfs-utils packages fix security vulnerability

It was reported that rpc.gssd in nfs-utils is vulnerable to
DNS spoofing due to it depending on PTR resolution for GSSAPI
authentication. Because of this, if a user where able to poison DNS to
a victim's computer, they would be able to trick rpc.gssd into talking
to another server (perhaps with less security) than the intended server
(with stricter security). If the victim has write access to the second
(less secure) server, and the attacker has read access (when they
normally might not on the secure server), the victim could write files
to that server, which the attacker could obtain (when normally they
would not be able to). To the victim this is transparent because the
victim's computer asks the KDC for a ticket to the second server due to
reverse DNS resolution; in this case Krb5 authentication does not fail
because the victim is talking to the correct server (CVE-2013-1923).

References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-1923
http://advisories.mageia.org/MGASA-2013-0178.html

Updated Packages:

Mandriva Business Server 1/X86_64:
ef6b2113ca2c817fc22efcc1ac86cb4b mbs1/x86_64/nfs-utils-1.2.5-2.1.mbs1.x86_64.rpm
b757876d603028118ed714a379632c87 mbs1/x86_64/nfs-utils-clients-1.2.5-2.1.mbs1.x86_64.rpm
1b545015a01bd04c6db45b4f37e49652 mbs1/SRPMS/nfs-utils-1.2.5-2.1.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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