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IBM U2 UniVerse "cci_dir" Privilege Escalation Vulnerability
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Secunia Advisory:
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SA9296
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Release Date:
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2003-07-18
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Popularity:
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5,304 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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Unpatched
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| Software: | IBM U2 UniVerse 10.x
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Description:
A vulnerability has been reported in IBM U2 UniVerse, which can be exploited by malicious, local users to escalate their privileges on a vulnerable system.
The vulnerability is caused due to the utility "cci_dir" creating hard links while running suid "root". This can be exploited to delete existing files using "unlink()" and create new ones with arbitrary content, which can be exploited to gain "root" privileges.
A PoC (Proof of Concept) exploit where a specially crafted "ld.so.preload" file is made is included in the original advisory.
The vulnerability has been reported in version 10.0.0.9 and prior.
Solution:
Remove the suid bit.
Reportedly, the vulnerability will be fixed in future versions.
Provided and/or discovered by:
KF (Secure Network Operations)
Original Advisory:
http://www.secnetops.com/research/advisories/SRT2003-07-07-0831.txt
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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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