CVE-2009-4147 The _rtld function in the Run-Time Link-Editor (rtld) in libexec/rtld-elf/rtld.c in FreeBSD 7.1 and 8.0 does not clear the (1) LD_LIBMAP, (2) LD_LIBRARY_PATH, (3) LD_LIBMAP_DISABLE, (4) LD_DEBUG, and....
HighCVSS 7.2
EPSS 3.7%
Framework module
Public exploit
- Published
- Updated
- Exploit status
- Public exploit available
Description
The _rtld function in the Run-Time Link-Editor (rtld) in libexec/rtld-elf/rtld.c in FreeBSD 7.1 and 8.0 does not clear the (1) LD_LIBMAP, (2) LD_LIBRARY_PATH, (3) LD_LIBMAP_DISABLE, (4) LD_DEBUG, and (5) LD_ELF_HINTS_PATH environment variables, which allows local users to gain privileges by executing a setuid or setguid program with a modified variable containing an untrusted search path that points to a Trojan horse library, different vectors than CVE-2009-4146.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| freebsd | = 7.1 | No fix listed |
| freebsd | = 8.0 | No fix listed |
References
- packetstormsecurity.com
- people.freebsd.org patch
- 37517 third-party-advisory vendor-advisory
- 20091130 ** FreeBSD local r00t zeroday mailing-list
- 20091201 Upcoming FreeBSD Security Advisory mailing-list
- 37154 exploit vdb-entry
- 1023250 patch vdb-entry