CVE-2009-4146

38Vexday Risk Score

Patch soon. It has a working public exploit.

ssvc Attendepss 3.9%

from disclosure to weapon0 days

Published on NVDDec 2

1st PoCNov 30

metasploitNov 30

exploitation probability

3.9%top 11% of all CVEs

observed exploitation

nono source reports it

2 public exploit(s)

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.

Affected products

n/a · n/a

public PoCs found — 2

cve_referencepacketstormsecurity.com/files/152997/FreeBSD-rtld-execl-Privilege-Escalation.htmlunverified exploitdbwww.exploit-db.com/exploits/10255unverified

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

References

http://packetstormsecurity.com/files/152997/FreeBSD-rtld-execl-Privilege-Escalation.html http://people.freebsd.org/~cperciva/rtld.patch http://secunia.com/advisories/37517 http://www.securityfocus.com/archive/1/508142/100/0/threaded http://www.securityfocus.com/archive/1/508146/100/0/threaded http://www.securityfocus.com/archive/1/508168/100/0/threaded http://www.securityfocus.com/bid/37154 http://www.securitytracker.com/id?1023250