pam_wheel in Linux-PAM 0.78, with the trust option enabled and the use_uid option disabled, allows local users to spoof log entries and gain privileges by causing getlogin() to return a spoofed user name.
http://www.redhat.com/support/errata/RHSA-2004-304.html
http://marc.info/?l=bugtraq&m=105577915506761&w=2
Source: Mitre, NVD
Published: 2003-07-24
Updated: 2016-10-18
Base Score: 4.6
Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P
Severity: Medium
Base Score: 7.8
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Severity: High