Detections
Analytics
CVE-2009-4146
high
Description
The _rtld function in the Run-Time Link-Editor (rtld) in libexec/rtld-elf/rtld.c in FreeBSD 7.1, 7.2, and 8.0 does not clear the LD_PRELOAD environment variable, which allows local users to gain privileges by executing a setuid or setguid program with a modified LD_PRELOAD variable containing an untrusted search path that points to a Trojan horse library, a different vector than CVE-2009-4147.
References
http://www.securitytracker.com/id?1023250
http://www.securityfocus.com/archive/1/508168/100/0/threaded
http://www.securityfocus.com/archive/1/508146/100/0/threaded
http://www.securityfocus.com/archive/1/508142/100/0/threaded
http://secunia.com/advisories/37517
http://packetstormsecurity.com/files/152997/FreeBSD-rtld-execl-Privilege-Escalation.html