Buffer overflow in Ghostscript - CVE-2019-3839

Vulnerability identifier: #VU18433

CSH Severity: High

CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2019-3839

CWE-ID: CWE-119

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing Postsccript files within the GPL PostScript/PDF interpreter. A remote attacker can create a specially crafted Postscript document, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

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 x86_64
Red Hat Enterprise Linux for Power
Opensuse
Fedora
ghostscript (Debian package)
ghostscript (Alpine package)
ghostscript

Install updates from vendor's website.

Ghostscript - update to 9.27
ghostscript (Debian package) - update to 9.26a~dfsg-0+deb9u3
ghostscript (Alpine package) - update to 9.26-r4
ghostscript - addressed in versions 9.27-1.fc29, 9.27-1.fc30, 9.27-1.fc31

• https://www.debian.org/security/2019/dsa-4442

• Debian update for ghostscript
• Red Hat update for ghostscript
• Red Hat update for ghostscript
• OpenSUSE Linux update for ghostscript
• OpenSUSE Linux update for ghostscript
• Buffer overflow in ghostscript (Alpine package)
• Fedora 29 update for ghostscript
• Fedora 30 update for ghostscript
• Fedora 31 update for ghostscript