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computer vulnerability note CVE-2005-4068

AIX: vulnerability of umountall

Synthesis of the vulnerability

The umountall command has a vulnerability.
Impacted products: AIX.
Severity of this bulletin: 1/4.
Consequences of an intrusion: administrator access/rights.
Hacker's origin: user shell.
Creation date: 07/12/2005.
Références of this threat: BID-15758, CVE-2005-4068, IY75283, IY75294, IY79485, VIGILANCE-VUL-5409.

Description of the vulnerability

The umountall command unmounts all file systems, excepted /, /proc, /usr and /var.

IBM announced a vulnerability in this command. Its technical details are unknown.

This vulnerability could result of a call to external commands, without using their full pathname. An attacker then could create a trojan with umount name in order to run code with rights of umountall user.
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