CVE-2019-13179 Information

Description

Calamares versions 3.1 through 3.2.10 copies a LUKS encryption keyfile from /crypto_keyfile.bin (mode 0600 owned by root) to /boot within a globally readable initramfs image with insecure permissions which allows this originally protected file to be read by any user thereby disclosing decryption keys for LUKS containers created with Full Disk Encryption.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Reference

https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/1835095 https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/1835096 https://bugzilla.redhat.com/show_bug.cgi?id=1726542 https://calamares.io/calamares-3.2.11-is-out/ https://calamares.io/calamares-cve-2019/ https://github.com/calamares/calamares/issues/1191 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Q57BOTBA2J5U4GVKUP7N2PD5H7B3BVUU/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/R2ZDQRGBGRVRW5LPJWKUNS3M66LZ3KYC/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

7.5