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OpenLDAP "krbv4_ldap_auth()" Buffer Overflow Vulnerability
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Secunia Advisory:
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SA23334
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Release Date:
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2006-12-13
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Last Update:
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2006-12-18
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Popularity:
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8,053 views
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Critical:
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Moderately critical
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Impact:
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System access
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| Software: | OpenLDAP 2.1.x
OpenLDAP 2.2.x
OpenLDAP 2.3.x
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| CVE reference: | CVE-2006-6493
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Description:
Solar Eclipse has reported a vulnerability in OpenLDAP, which can be exploited by malicious people to potentially compromise a vulnerable system.
The vulnerability is caused due to a boundary error within the "krbv4_ldap_auth()" function in servers/slapd/kerberos.c and can be exploited to cause a stack based buffer overflow by sending a specially crafted bind request with more than 1250 bytes of credential data.
Successful exploitation may allow the execution of arbitrary code, but requires that OpenLDAP is compiled with the "--enable-kbind" option (not enabled by default since version 2.0.2 and removed from the configure script since version 2.1).
Solution:
Update to version 2.3.31.
Provided and/or discovered by:
Solar Eclipse
Changelog:
2006-12-18: Updated "Solution" section.
Original Advisory:
http://www.phreedom.org/solar/exploits/openldap-kbind/
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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