Incorrect Conversion between Numeric Types in Gnome GLib

#VU51455 Incorrect Conversion between Numeric Types in Gnome GLib

Published: 2021-03-15

Vulnerability identifier: #VU51455

Vulnerability risk: Low

CVSSv3.1:

CVE-ID: CVE-2021-27218

CWE-ID: CWE-681

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Gnome GLib
Universal components / Libraries / Libraries used by multiple products

Vendor: Gnome Development Team

Description

The vulnerability allows a local user to bypass implemented security restrictions.

The vulnerability exists due to incorrect conversion between numeric types in Gnome Glib. If g_byte_array_new_take() was called with a buffer of 4GB or more on a 64-bit platform, the length would be truncated modulo 2**32, causing unintended length truncation.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Gnome GLib: 2.66.0 - 2.67.3

CPE