PRIOn knowledge basePRION:CVE-2009-4146Design/Logic Flaw
6.6 Medium
AI Score
Confidence
Low
7.2 High
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
0.0004 Low
EPSS
Percentile
5.4%
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
packetstormsecurity.com/files/152997/FreeBSD-rtld-execl-Privilege-Escalation.html
people.freebsd.org/~cperciva/rtld.patch
secunia.com/advisories/37517
www.securityfocus.com/archive/1/508142/100/0/threaded
www.securityfocus.com/archive/1/508146/100/0/threaded
www.securityfocus.com/archive/1/508168/100/0/threaded
www.securityfocus.com/bid/37154
www.securitytracker.com/id?1023250
Related
6.6 Medium
AI Score
Confidence
Low
7.2 High
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
0.0004 Low
EPSS
Percentile
5.4%