Ubuntu update for GLib

Published: 2019-06-11 08:46:11 | Updated: 2019-06-11
Severity Low
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2019-12450
CVSSv3 3.9 [CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]
CWE ID CWE-264
Exploitation vector Local
Public exploit N/A
Vulnerable software glib2.0 (Ubuntu package)
Vulnerable software versions glib2.0 (Ubuntu package) 2.48.2-0ubuntu4.1
glib2.0 (Ubuntu package) 2.48.1-1~ubuntu16.04.1
glib2.0 (Ubuntu package) 2.48.2-0ubuntu2

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Vendor URL Canonical Ltd.

Security Advisory

1) Permissions, Privileges, and Access Controls

Description

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

The vulnerability exists due to the application applies default directory permissions to files while copying them in file_copy_fallback() function in gio/gfile.c. A local user can interfere with the copying operation and gain access to otherwise restricted files, as the application applies correct access permissions after the file was copied only.

Such application behavior allows a local user to access potentially sensitive data or modify file contents in case directory permissions that were applied to the file allow such operations.

Remediation

Update the affected packages.

Ubuntu 19.04
libglib2.0-0 - 2.60.0-1ubuntu0.1
libglib2.0-bin - 2.60.0-1ubuntu0.1
libglib2.0-dev - 2.60.0-1ubuntu0.1
Ubuntu 18.10
libglib2.0-0 - 2.58.1-2ubuntu0.1
libglib2.0-bin - 2.58.1-2ubuntu0.1
libglib2.0-dev - 2.58.1-2ubuntu0.1
Ubuntu 18.04 LTS
libglib2.0-0 - 2.56.4-0ubuntu0.18.04.3
libglib2.0-bin - 2.56.4-0ubuntu0.18.04.3
libglib2.0-dev - 2.56.4-0ubuntu0.18.04.3
Ubuntu 16.04 LTS
libglib2.0-0 - 2.48.2-0ubuntu4.2
libglib2.0-bin - 2.48.2-0ubuntu4.2
libglib2.0-dev - 2.48.2-0ubuntu4.2

External links

https://usn.ubuntu.com/4014-1/

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