lbreakout2 vulnerability in environment variable handling

2004-02-21T00:00:00
ID AD4F6CA4-6720-11D8-9FB5-000A95BC6FAE
Type freebsd
Reporter FreeBSD
Modified 2004-02-21T00:00:00

Description

Ulf Härnhammar discovered an exploitable vulnerability in lbreakout2's environmental variable handling. In several instances, the contents of the HOME environmental variable are copied to a stack or global buffer without range checking. A local attacker may use this vulnerability to acquire group-ID `games' privileges. An exploit for this vulnerability has been published by ``Li0n7 voila fr''.