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Oracle LD_PRELOAD Privilege Escalation
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Secunia Advisory:
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SA10043
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Release Date:
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2003-10-21
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Last Update:
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2003-10-28
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Popularity:
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8,891 views
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Critical:
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Less critical
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Impact:
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Privilege escalation
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Where:
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Local system
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Solution Status:
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Vendor Workaround
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| Software: | Oracle Database 8.x
Oracle9i Database Enterprise Edition
Oracle9i Database Standard Edition
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Description:
A vulnerability has been identified in Oracle allowing malicious local users to escalate their privileges.
The problem is that the "LD_PRELOAD" environment variable isn't properly verified allowing malicious users to set "LD_PRELOAD" to an overly long string causing a buffer overflow. This could potentially be used to execute arbitrary code with elevated privileged as user "oracle" and group "dba".
A proof of concept exploit has been published.
This affects the Oracle 8i Database and Oracle 9i Database (release 1 and 2).
Solution:
Oracle recommend that you remove execute permissions for "other" (chmod 0-x oracle oracleO).
Secunia recommend that you restrict access to the database server so that only trusted users have access.
Provided and/or discovered by:
c0ntex
Original Advisory:
Buffer Overflow in Oracle Binary
http://otn.oracle.com/deploy/security/pdf/2003Alert59.pdf
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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.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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