Mageia: Security Advisory (MGASA-2018-0408)

The remote host is missing an update for the SPDX-FileCopyrightText: 2022 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

Ghostscript 9.26 - Pseudo-Operator Remote Code Execution

I noticed ghostscript 9.26 was released, so had a quick look and spotted some errors. For background, this is how you define a subroutine in postscript: /hello hello\n print def That's simple enough, but because a subroutine is just an executable array of commands, you need to mark it as...

Ubuntu Ghostscript Failed Fix

Ubuntu: incomplete fix for CVE-2018-16510 This Ubuntu advisory claims to fix CVE-2018-16510: https://usn.ubuntu.com/3768-1/ That does not appear to be true. The root cause of CVE-2018-16510 was that a bunch of procedures were in userdict that should have been executeonly, but were not. In...

MGASA-2018-0408 Updated ghostscript packages fix security vulnerabilities

Updated ghostscript packages fix many bugs and security vulnerabilities: Bypassing executeonly to escape -dSAFER sandbox. CVE-2018-17961 Saved execution stacks can leak operator arrays. CVE-2018-18073 1Policy operator gives access to .forceput. CVE-2018-18284...

Updated ghostscript packages fix security vulnerabilities

Updated ghostscript packages fix many bugs and security vulnerabilities: Bypassing executeonly to escape -dSAFER sandbox. CVE-2018-17961 Saved execution stacks can leak operator arrays. CVE-2018-18073 1Policy operator gives access to .forceput. CVE-2018-18284...

ghostscript - executeonly Bypass with errorhandler Setup Exploit

Exploit for linux platform in category local exploits While documenting bug 1675, I noticed another problem with errordict in ghostscript. Full working exploit that works in the last few versions is attached, viewing it in evince, imagemagick, gimp, okular, etc should add a line to /.bashrc...

ghostscript - executeonly Bypass with errorhandler Setup

While documenting bug 1675, I noticed another problem with errordict in ghostscript. Full working exploit that works in the last few versions is attached, viewing it in evince, imagemagick, gimp, okular, etc should add a line to /.bashrc. Additionally, because nautilus will automatically invoke...