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Backup and Restore Utility Privilege Escalation Vulnerabilities
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Secunia Advisory:
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SA9305
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Release Date:
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2003-07-18
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Popularity:
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4,914 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: | Backup and Restore Utility (BRU)
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Description:
Two vulnerabilities have been reported in Backup and Restore Utility for Unix (BRU), which can be exploited by malicious, local users to escalate their privileges on a vulnerable system.
Both vulnerabilities are caused due to erroneous handling of command line parameters. A boundary error exists, which can be exploited by supplying an overly long (3050 characters), specially crafted command line argument. A format string error also exists, which can be exploited by supplying specially crafted arguments containing format specifiers.
Successful exploitation of the two vulnerabilities will allow execution of arbitrary code with "root" privileges.
The vulnerabilities have been reported in version 17.0 and prior. However, according to the original advisory only the older version from Enhanced Software Technologies (EST) was shipped with the suid bit set (not the one from the TOLIS Group).
Solution:
Remove the suid bit.
Reportedly, the TOLIS Group will fix this in future versions.
http://www.tolisgroup.com
Provided and/or discovered by:
Kevin Finisterre (Secure Network Operations)
Original Advisory:
http://www.secnetops.com/research/advisories/SRT2003-07-16-0358.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.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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