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Vulnerability of xcftools: integer overflow via flattenIncrementally

Synthesis of the vulnerability 

An attacker can trigger an integer overflow via flattenIncrementally() of xcftools, in order to trigger a denial of service, and possibly to run code.
Impacted systems: Debian.
Severity of this alert: 2/4.
Creation date: 10/02/2021.
Références of this alert: CVE-2019-5087, DLA-2553-1, VIGILANCE-VUL-34541.

Description of the vulnerability 

An attacker can trigger an integer overflow via flattenIncrementally() of xcftoo...
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This computer vulnerability bulletin impacts software or systems such as Debian.

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

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

An attacker with a expert ability can exploit this threat note.

Solutions for this threat 

This vulnerability workaround will be public soon.
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