Arch Linux Security Advisory ASA-201811-3 ========================================= Severity: High Date : 2018-11-06 CVE-ID : CVE-2018-17961 CVE-2018-18073 CVE-2018-18284 Package : ghostscript Type : sandbox escape Remote : Yes Link : https://security.archlinux.org/AVG-786 Summary ======= The package ghostscript before version 9.25-4 is vulnerable to sandbox escape. Resolution ========== Upgrade to 9.25-4. # pacman -Syu "ghostscript>=9.25-4" The problems have been fixed upstream but no release is available yet. Workaround ========== None. Description =========== - CVE-2018-17961 (sandbox escape) Artifex Ghostscript 9.25 and earlier allows attackers to bypass a sandbox protection mechanism via vectors involving errorhandler setup. - CVE-2018-18073 (sandbox escape) Artifex Ghostscript allows attackers to bypass a sandbox protection mechanism by leveraging exposure of system operators in the saved execution stack in an error object. - CVE-2018-18284 (sandbox escape) Artifex Ghostscript 9.25 and earlier allows attackers to bypass a sandbox protection mechanism via vectors involving the 1Policy operator. Impact ====== A remote attacker is able to escape the sandbox via a specially crafted PostScript document. References ========== https://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=a54c9e61e7d02bbc6... https://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=a5a9bf8c6a63aa4ac... https://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=a6807394bd94b708b... https://www.openwall.com/lists/oss-security/2018/10/09/4 https://bugs.chromium.org/p/project-zero/issues/detail?id=1682&desc=2 https://bugs.ghostscript.com/show_bug.cgi?id=699816 https://lists.debian.org/debian-lts-announce/2018/10/msg00013.html https://www.exploit-db.com/exploits/45573/ https://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=34cc326eb2c569583... http://packetstormsecurity.com/files/149758/Ghostscript-Exposed-System-Opera... http://www.openwall.com/lists/oss-security/2018/10/10/12 https://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=8d19fdf63f91f5046... https://www.openwall.com/lists/oss-security/2018/10/16/2 https://bugs.chromium.org/p/project-zero/issues/detail?id=1696 https://bugs.ghostscript.com/show_bug.cgi?id=699963 https://security.archlinux.org/CVE-2018-17961 https://security.archlinux.org/CVE-2018-18073 https://security.archlinux.org/CVE-2018-18284