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Vigil@nce - Linux kernel: read-write access via Nfsd No-ACL Unapplied Umask

October 2020 by Vigil@nce

This bulletin was written by Vigil@nce : https://vigilance.fr/computer-vulne...

SYNTHESIS OF THE VULNERABILITY

- Impacted products: Linux, openSUSE Leap, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
- Severity: 2/4.
- Consequences: data reading, data creation/edition, data deletion.
- Provenance: user shell.
- Confidence: confirmed by the editor (5/5).
- Creation date: 20/08/2020.

DESCRIPTION OF THE VULNERABILITY

An attacker can bypass access restrictions via Nfsd No-ACL Unapplied Umask of the Linux kernel, in order to read or alter data.

ACCESS TO THE FULL VIGIL@NCE BULLETIN

https://vigilance.fr/vulnerability/...




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