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zblast Privilege Escalation Vulnerability
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Secunia Advisory:
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SA8983
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Release Date:
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2003-06-10
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Popularity:
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5,382 views
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Critical:
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Not 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: | zblast 1.x
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Description:
A vulnerability has been reported in zblast, which can be exploited by malicious, local users to escalate privileges on a vulnerable system.
The vulnerability is caused due to a boundary error, when the environment variables "ZBLAST_NAME", "USER", and "LOGNAME" are copied into the allocated buffer. This happens when writing to the high score file and can be exploited by manipulating the environment variables, which can result in a buffer overflow.
Successful exploitation allows execution of arbitrary code with the privileges of the "games" group.
Solution:
If you consider this a security issue, remove zblast from your system or remove the sgid bit. Games shouldn't be installed on production systems.
Provided and/or discovered by:
Vade 79
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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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2nd Dec, 2008
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