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Date: | Thu, 3 Mar 2011 15:51:49 -0600 |
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Synopsis: Moderate: pam security update
Issue date: 2010-11-16
CVE Names: CVE-2010-3316 CVE-2010-3435 CVE-2010-3853
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_env and pam_mail modules used root
privileges while accessing user's files. A local, unprivileged user
could use this flaw to obtain information, from the lines that have the
KEY=VALUE format expected by pam_env, from an arbitrary file. Also, in
certain configurations, a local, unprivileged user using a service for
which the pam_mail module was configured for, could use this flaw to
obtain limited information about files or directories that they do not
have access to. (CVE-2010-3435)
Note: As part of the fix for CVE-2010-3435, this update changes the
default value of pam_env's configuration option user_readenv to 0,
causing the module to not read user's ~/.pam_environment configuration
file by default, as reading it may introduce unexpected changes to the
environment of the service using PAM, or PAM modules consulted after
pam_env.
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)
SL 6.x
SRPMS:
pam-1.1.1-4.el6_0.1.src.rpm
i386:
pam-1.1.1-4.el6_0.1.i686.rpm
pam-devel-1.1.1-4.el6_0.1.i686.rpm
x86_64:
pam-1.1.1-4.el6_0.1.i686.rpm
pam-1.1.1-4.el6_0.1.x86_64.rpm
pam-devel-1.1.1-4.el6_0.1.i686.rpm
pam-devel-1.1.1-4.el6_0.1.x86_64.rpm
-Connie Sieh
-Troy Dawson
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