Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2019-12450

Incorrect Default Permissions

Published: May 29, 2019 | Modified: Nov 21, 2024
CVSS 3.x
9.8
CRITICAL
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
7.5 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P
RedHat/V2
RedHat/V3
6.6 MODERATE
CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2019-12450
CWEhttps://cwe.mitre.org/data/definitions/276.html

file_copy_fallback in gio/gfile.c in GNOME GLib 2.15.0 through 2.61.1 does not properly restrict file permissions while a copy operation is in progress. Instead, default permissions are used.

Weakness

During installation, installed file permissions are set to allow anyone to modify those files.

Affected Software

NameVendorStart VersionEnd Version
GlibGnome2.15.0 (including)2.61.1 (including)
Red Hat Enterprise Linux 7RedHatglib2-0:2.56.1-7.el7*
Red Hat Enterprise Linux 7RedHatibus-0:1.5.17-11.el7*
Red Hat Enterprise Linux 8RedHatglib2-0:2.56.4-7.el8*
Red Hat OpenShift DoRedHatopenshiftdo/odo-init-image-rhel7:1.1.3-2*
Glib2.0Ubuntubionic*
Glib2.0Ubuntucosmic*
Glib2.0Ubuntudevel*
Glib2.0Ubuntudisco*
Glib2.0Ubuntuesm-infra-legacy/trusty*
Glib2.0Ubuntuesm-infra/bionic*
Glib2.0Ubuntuesm-infra/xenial*
Glib2.0Ubuntutrusty*
Glib2.0Ubuntutrusty/esm*
Glib2.0Ubuntuxenial*

Potential Mitigations

  • Compartmentalize the system to have “safe” areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area.
  • Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.

References

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