Incorrect Conversion between Numeric Types in Gnome GLib - CVE-2021-27218
Published: March 15, 2021
Vulnerability identifier: #VU51455
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-27218
CWE-ID: CWE-681
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Gnome Development Team
Affected software:
Gnome GLib
Gnome GLib
Detailed vulnerability 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.
How to mitigate CVE-2021-27218
Install updates from vendor's website.