NULL pointer dereference in Gnome Font Viewer - CVE-2019-19308
Published: November 28, 2019 / Updated: September 21, 2021
Vulnerability identifier: #VU23073
CSH Severity: Low
CVSS v4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-19308
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error in text_to_glyphs in sushi-font-widget.c in Gnome font viewer while parsing a TTF font file that lacks a name section. A remote attacker can pass a specially crafted TTF file to the affected application and perform a denial of service (DoS) attack.
Affected software
Gnome Font Viewer
openEuler
gnome-font-viewer
gnome-font-viewer-debugsource
gnome-font-viewer-debuginfo
openEuler
gnome-font-viewer
gnome-font-viewer-debugsource
gnome-font-viewer-debuginfo
How to mitigate CVE-2019-19308
Install update from vendor's website.
gnome-font-viewer - update to 3.34.0-2
gnome-font-viewer-debugsource - update to 3.34.0-2
gnome-font-viewer-debuginfo - update to 3.34.0-2
gnome-font-viewer-debugsource - update to 3.34.0-2
gnome-font-viewer-debuginfo - update to 3.34.0-2