CVE-2006-6164

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Summary

CVECVE-2006-6164
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2006-11-29 01:28:00 UTC
Updated2026-04-23 00:35:47 UTC
DescriptionThe _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.

Risk And Classification

Primary CVSS: v2.0 7.2 from [email protected]

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

Problem Types: NVD-CWE-Other | n/a

CVSS v2.0 Breakdown

Access Vector
Local
Access Complexity
Low
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Openbsd Openbsd 3.9 All All All
Operating System Openbsd Openbsd 4.0 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
SecurityTracker.com Archives - OpenBSD 'ld.so(1)' May Let Local Users Gain Elevated Privileges af854a3a-2127-422b-91ae-364da2661108 securitytracker.com Patch
OpenBSD ELF ld.so Environment Cleaning Vulnerability - Advisories - Secunia af854a3a-2127-422b-91ae-364da2661108 secunia.com
Matasano Chargen » Finger 79/tcp # McDonald, Dowd and Schuh Challenge: Part 2 af854a3a-2127-422b-91ae-364da2661108 www.matasano.com
IBM X-Force Exchange af854a3a-2127-422b-91ae-364da2661108 exchange.xforce.ibmcloud.com
OpenBSD 4.0 errata af854a3a-2127-422b-91ae-364da2661108 www.openbsd.org Patch
OpenBSD LD.SO Local Environment Variable Clearing Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com
SecurityFocus af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com
OpenBSD 3.9 errata af854a3a-2127-422b-91ae-364da2661108 www.openbsd.org Patch
SecurityFocus af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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