Type confusion in Ghostscript - CVE-2018-19134
Published: December 18, 2018
Vulnerability identifier: #VU16577
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-19134
CWE-ID: CWE-843
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to missing type check in line 292 of zcolor.c. A remote unauthenticated attacker can trigger memory corruption and execute code using the "pipe" instruction.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
Ghostscript
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux for Power
Fedora
ghostscript
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux for Power
Fedora
ghostscript
How to mitigate CVE-2018-19134
Install update from vendor's website.
ghostscript - addressed in versions 9.26-1.fc28, 9.26-1.fc29