CVE-2010-3431

The privilege-dropping implementation in the (1) pam_env and (2) pam_mail
modules in Linux-PAM (aka pam) 1.1.2 does not check the return value of the
setfsuid system call, which might allow local users to obtain sensitive
information by leveraging an unintended uid, as demonstrated by a symlink
attack on the .pam_environment file in a user’s home directory. NOTE: this
vulnerability exists because of an incomplete fix for CVE-2010-3435.

Bugs

• <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=599832&gt;

Notes