Integer overflow in Gnome GLib - CVE-2020-35457

Vulnerability identifier: #VU95402

CSH Severity: Low

CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2020-35457

CWE-ID: CWE-190

Exploitation vector: Local access

Exploit availability: No public exploit available

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

The vulnerability exists due to integer overflow within the g_option_group_add_entries() function. A local user can trigger an integer overflow and execute arbitrary code on the target system.

Gnome GLib
Amazon Linux AMI
openEuler
glib2
glib2-debuginfo
glib2-debugsource
glib2-devel
glib2-help

Install updates from vendor's website.

Gnome GLib - update to 2.65.3
glib2 - update to 2.36.3-5.27
glib2 - update to 2.62.5-4
glib2-debuginfo - update to 2.62.5-4
glib2-debugsource - update to 2.62.5-4
glib2-devel - update to 2.62.5-4
glib2-help - update to 2.62.5-4

• https://gitlab.gnome.org/GNOME/glib/-/commit/63c5b62f0a984fac9a9700b12f54fe878e016a5d
• https://gitlab.gnome.org/GNOME/glib/-/releases/2.65.3
• https://gitlab.gnome.org/GNOME/glib/-/issues/2197

• Privilege escalation in GNOME GLib
• Amazon Linux AMI update for glib2
• openEuler 20.03 LTS update for glib2