NULL pointer dereference in FreeType - CVE-2018-6942
Published: May 10, 2018
Vulnerability identifier: #VU12561
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-6942
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The weakness exists in the Ins_GETVARIATION() function within ttinterp.c due to NULL pointer dereference. A remote attacker can trick the victim into opening a specially crafted font file and cause the service to crash.
The weakness exists in the Ins_GETVARIATION() function within ttinterp.c due to NULL pointer dereference. A remote attacker can trick the victim into opening a specially crafted font file and cause the service to crash.
Affected software
FreeType
Arch Linux
Opensuse
Ubuntu
Fedora
freetype (Alpine package)
freetype
Arch Linux
Opensuse
Ubuntu
Fedora
freetype (Alpine package)
freetype
How to mitigate CVE-2018-6942
Install update from vendor's website.
freetype (Alpine package) - update to 2.7-r2
freetype - addressed in versions 2.7.1-10.fc26, 2.8-8.fc27
freetype - addressed in versions 2.7.1-10.fc26, 2.8-8.fc27