Security restrictoins bypass in GNOME GLib
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-27218 |
| CWE-ID | CWE-681 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Gnome GLib Universal components / Libraries / Libraries used by multiple products |
| Vendor | Gnome Development Team |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Incorrect Conversion between Numeric Types
EUVDB-ID: #VU51455
Risk: Low
CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-27218
CWE-ID:
CWE-681 - Incorrect Conversion between Numeric Types
Exploit availability: No
DescriptionThe 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.
MitigationInstall updates from vendor's website.
Vulnerable software versionsGnome GLib: 2.66.0 - 2.67.3
External linkshttp://gitlab.gnome.org/GNOME/glib/-/merge_requests/1942
http://gitlab.gnome.org/GNOME/glib/-/merge_requests/1944
http://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772@%3Cdev.mina.apache.org%3E
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
