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Test ID:1.3.6.1.4.1.25623.1.0.68290
Category:Red Hat Local Security Checks
Title:RedHat Security Advisory RHSA-2010:0819
Summary:Redhat Security Advisory RHSA-2010:0819
Description:The remote host is missing updates announced in
advisory RHSA-2010:0819.

Pluggable Authentication Modules (PAM) provide a system whereby
administrators can set up authentication policies without having to
recompile programs that handle authentication.

It was discovered that the pam_namespace module executed the external
script namespace.init with an unchanged environment inherited from an
application calling PAM. In cases where such an environment was untrusted
(for example, when pam_namespace was configured for setuid applications
such as su or sudo), a local, unprivileged user could possibly use this
flaw to escalate their privileges. (CVE-2010-3853)

It was discovered that the pam_mail module used root privileges while
accessing users' files. In certain configurations, a local, unprivileged
user could use this flaw to obtain limited information about files or
directories that they do not have access to. (CVE-2010-3435)

It was discovered that the pam_xauth module did not verify the return
values of the setuid() and setgid() system calls. A local, unprivileged
user could use this flaw to execute the xauth command with root privileges
and make it read an arbitrary input file. (CVE-2010-3316)

Red Hat would like to thank Sebastian Krahmer of the SuSE Security Team for
reporting the CVE-2010-3435 issue.

All pam users should upgrade to these updated packages, which contain
backported patches to correct these issues.

Solution:
Please note that this update is available via
Red Hat Network. To use Red Hat Network, launch the Red
Hat Update Agent with the following command: up2date

http://rhn.redhat.com/errata/RHSA-2010-0819.html
http://www.redhat.com/security/updates/classification/#moderate

Risk factor : High
Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2010-3316
Bugtraq: 20110308 VMSA-2011-0004 VMware ESX/ESXi SLPD denial of service vulnerability and ESX third party updates for Service Console packages bind, pam, and rpm. (Google Search)
http://www.securityfocus.com/archive/1/archive/1/516909/100/0/threaded
http://openwall.com/lists/oss-security/2010/08/16/2
http://openwall.com/lists/oss-security/2010/09/21/3
http://openwall.com/lists/oss-security/2010/09/21/8
http://www.openwall.com/lists/oss-security/2010/09/24/2
http://openwall.com/lists/oss-security/2010/09/27/4
http://openwall.com/lists/oss-security/2010/09/27/5
http://openwall.com/lists/oss-security/2010/09/27/7
http://openwall.com/lists/oss-security/2010/09/27/10
http://openwall.com/lists/oss-security/2010/10/25/2
http://lists.vmware.com/pipermail/security-announce/2011/000126.html
https://sourceforge.net/tracker/?func=detail&aid=3028213&group_id=6663&atid=106663
http://security.gentoo.org/glsa/glsa-201206-31.xml
http://www.mandriva.com/security/advisories?name=MDVSA-2010:220
http://www.redhat.com/support/errata/RHSA-2010-0819.html
http://www.redhat.com/support/errata/RHSA-2010-0891.html
http://secunia.com/advisories/49711
http://www.vupen.com/english/advisories/2011/0606
Common Vulnerability Exposure (CVE) ID: CVE-2010-3435
http://openwall.com/lists/oss-security/2010/09/27/8
Common Vulnerability Exposure (CVE) ID: CVE-2010-3853
CopyrightCopyright (c) 2010 E-Soft Inc. http://www.securityspace.com

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