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CVE-2009-4146

CVE-2009-4146

EPSS 3.9%
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.htmlunverifiedexploitdbwww.exploit-db.com/exploits/10255unverified
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References
http://packetstormsecurity.com/files/152997/FreeBSD-rtld-execl-Privilege-Escalation.htmlhttp://people.freebsd.org/~cperciva/rtld.patchhttp://secunia.com/advisories/37517http://www.securityfocus.com/archive/1/508142/100/0/threadedhttp://www.securityfocus.com/archive/1/508146/100/0/threadedhttp://www.securityfocus.com/archive/1/508168/100/0/threadedhttp://www.securityfocus.com/bid/37154http://www.securitytracker.com/id?1023250