Description

pam_namespace.c in the pam_namespace module in Linux-PAM (aka pam) before 1.1.3 uses the environment of the invoking application or service during execution of the namespace.init script, which might allow local users to gain privileges by running a setuid program that relies on the pam_namespace PAM check, as demonstrated by the sudo program.

Affected Products 24

References 11

• lists.vmware.com http://lists.vmware.com/pipermail/security-announce/2011/000126.html
• pam.cvs.sourceforge.net http://pam.cvs.sourceforge.net/viewvc/pam/Linux-PAM/modules/pam_namespace/pam_namespace.c?view=log#rev1.13
  Patch
• secunia.com http://secunia.com/advisories/49711
• security.gentoo.org http://security.gentoo.org/glsa/glsa-201206-31.xml
• mandriva.com http://www.mandriva.com/security/advisories?name=MDVSA-2010:220
• redhat.com http://www.redhat.com/support/errata/RHSA-2010-0819.html
• redhat.com http://www.redhat.com/support/errata/RHSA-2010-0891.html
• securityfocus.com http://www.securityfocus.com/archive/1/516909/100/0/threaded
• vmware.com http://www.vmware.com/security/advisories/VMSA-2011-0004.html
• vupen.com http://www.vupen.com/english/advisories/2011/0606
• bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=643043
  Patch

Remediation

• pam.cvs.sourceforge.net http://pam.cvs.sourceforge.net/viewvc/pam/Linux-PAM/modules/pam_namespace/pam_namespace.c?view=log#rev1.13
  Patch
• bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=643043
  Patch