Vulnerability Monitor

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CVE-2006-6164

The _dl_unsetenv function in loader.c in the ELF ld.so in OpenBSD 3.9 and 4.0 does not properly remove duplicate environment variables, which allows local users to pass dangerous variables such as LD_PRELOAD to loading processes, which might be leveraged to gain privileges.

Published

2006-11-29T01:28:00.000

Last Modified

2025-04-09T00:30:58.490

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 7.2 (HIGH)

CVSSv2 Vector

AV:L/AC:L/Au:N/C:C/I:C/A:C

Access Vector: LOCAL
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: COMPLETE
Integrity Impact: COMPLETE
Availability Impact: COMPLETE

Exploitability Score

3.9

Impact Score

10.0

Weaknesses

Type: Primary
NVD-CWE-Other

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	openbsd	openbsd	3.9	Yes
Operating System	openbsd	openbsd	4.0	Yes

References

http://secunia.com/advisories/22993 ([email protected])
http://securitytracker.com/id?1017253 Patch ([email protected])
http://www.matasano.com/log/592/finger-79tcp-mcdonald-dowd-and-schuh-challenge-part-2/ ([email protected])
http://www.openbsd.org/errata.html#ldso Patch ([email protected])
http://www.openbsd.org/errata39.html#ldso Patch ([email protected])
http://www.securityfocus.com/archive/1/452371/100/0/threaded ([email protected])
http://www.securityfocus.com/archive/1/452428/100/0/threaded ([email protected])
http://www.securityfocus.com/bid/21188 ([email protected])
https://exchange.xforce.ibmcloud.com/vulnerabilities/30441 ([email protected])
http://secunia.com/advisories/22993 (af854a3a-2127-422b-91ae-364da2661108)
http://securitytracker.com/id?1017253 Patch (af854a3a-2127-422b-91ae-364da2661108)
http://www.matasano.com/log/592/finger-79tcp-mcdonald-dowd-and-schuh-challenge-part-2/ (af854a3a-2127-422b-91ae-364da2661108)
http://www.openbsd.org/errata.html#ldso Patch (af854a3a-2127-422b-91ae-364da2661108)
http://www.openbsd.org/errata39.html#ldso Patch (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/archive/1/452371/100/0/threaded (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/archive/1/452428/100/0/threaded (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/21188 (af854a3a-2127-422b-91ae-364da2661108)
https://exchange.xforce.ibmcloud.com/vulnerabilities/30441 (af854a3a-2127-422b-91ae-364da2661108)