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Vulnerability of Apache Commons IO: directory traversal via FileNameUtils.normalize

Synthesis of the vulnerability 

An attacker can traverse directories via FileNameUtils.normalize() of Apache Commons IO, in order to read a file outside the service root path.
Vulnerable systems: openSUSE Leap, SUSE Linux Enterprise Desktop, SLES.
Severity of this threat: 2/4.
Creation date: 20/04/2021.
Références of this weakness: CVE-2021-29425, openSUSE-SU-2021:0605-1, SUSE-SU-2021:1282-1, SUSE-SU-2021:1315-1, VIGILANCE-VUL-35120.

Description of the vulnerability 

An attacker can traverse directories via FileNameUtils.normalize() of Apache Com...
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This computer vulnerability impacts software or systems such as openSUSE Leap, SUSE Linux Enterprise Desktop, SLES.

Our Vigil@nce team determined that the severity of this weakness bulletin is medium.

The trust level is of type confirmed by the editor, with an origin of internet client.

An attacker with a expert ability can exploit this weakness.

Solutions for this threat 

Fixes for this vulnerability are not yet public.
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