CVE-2006-6164

Summary

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.

Affected Software

Weaknesses

• n/a

ADP Enrichment

CVE Program Container

Additional References

• http://www.openbsd.org/errata39.html#ldso
• http://www.matasano.com/log/592/finger-79tcp-mcdonald-dowd-and-schuh-challenge-part-2/
• http://www.securityfocus.com/archive/1/452428/100/0/threaded
• http://secunia.com/advisories/22993
• http://www.securityfocus.com/bid/21188
• http://www.openbsd.org/errata.html#ldso
• http://www.securityfocus.com/archive/1/452371/100/0/threaded
• http://securitytracker.com/id?1017253
• https://exchange.xforce.ibmcloud.com/vulnerabilities/30441

References

• http://www.openbsd.org/errata39.html#ldso
• http://www.matasano.com/log/592/finger-79tcp-mcdonald-dowd-and-schuh-challenge-part-2/
• http://www.securityfocus.com/archive/1/452428/100/0/threaded
• http://secunia.com/advisories/22993
• http://www.securityfocus.com/bid/21188
• http://www.openbsd.org/errata.html#ldso
• http://www.securityfocus.com/archive/1/452371/100/0/threaded
• http://securitytracker.com/id?1017253
• https://exchange.xforce.ibmcloud.com/vulnerabilities/30441

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