SB2019070840 - Fedora 30 update for calamares

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Main Vulnerability Database SB2019070840

SB2019070840 - Fedora 30 update for calamares

Published: July 8, 2019 Updated: April 25, 2025

Security Bulletin ID SB2019070840
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Local access
Highest impact Information disclosure

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Race condition (CVE-ID: CVE-2019-13178)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a race condition in modules/luksbootkeyfile/main.py when creating LUKS encryption keyfile. A local user can exploit the race and gain unauthorized access to sensitive information in the encryption file while the application sets permissions on the file.


2) Incorrect default permissions (CVE-ID: CVE-2019-13179)

CWE-ID: CWE-276 - Incorrect Default Permissions

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to incorrect default permissions for files that are copied from /crypto_keyfile.bin (mode 0600 owned by root) to /boot within a globally readable initramfs image. A local user can decryption keys for LUKS containers created with Full Disk Encryption.


Remediation

Install update from vendor's website.

References