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CVE-2009-4146

Published: Dec 2, 2009

Modified: Aug 7, 2024

PUBLISHED

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.

Vendor	Product	Versions
n/a	n/a	affected `n/a`

References

vdb-entry

x_refsource_BID

20091201 Upcoming FreeBSD Security Advisory

mailing-list

x_refsource_BUGTRAQ

third-party-advisory

x_refsource_SECUNIA

http://people.freebsd.org/~cperciva/rtld.patch

x_refsource_CONFIRM

20091130 ** FreeBSD local r00t zeroday

mailing-list

x_refsource_BUGTRAQ

vdb-entry

x_refsource_SECTRACK

20091201 Re: ** FreeBSD local r00t zeroday

mailing-list

x_refsource_BUGTRAQ

http://packetstormsecurity.com/files/152997/FreeBSD-rtld-execl-Privilege-Escalation.html

x_refsource_MISC

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