modules/luksbootkeyfile/main.py in Calamares versions 3.1 through 3.2.10 has a race...

Vulnerability Description

modules/luksbootkeyfile/main.py in Calamares versions 3.1 through 3.2.10 has a race condition between the time when the LUKS encryption keyfile is created and when secure permissions are set.

References

• https://github.com/calamares/calamares/issues/1190
• https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/1835096
• https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/1835095
• https://www.pavelkogan.com/2014/05/23/luks-full-disk-encryption/
• https://www.pavelkogan.com/2015/01/25/linux-mint-encryption/
• https://github.com/calamares/calamares/issues/1191
• https://bugzilla.redhat.com/show_bug.cgi?id=1726565
• https://calamares.io/calamares-3.2.11-is-out/
• https://calamares.io/calamares-cve-2019/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Q57BOTBA2J5U4GVKUP7N2PD5H7B3BVUU/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R2ZDQRGBGRVRW5LPJWKUNS3M66LZ3KYC/
• http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00017.html
• http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00021.html
• http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00020.html