ASA-202109-3 log generated external raw
[ASA-202109-3] ghostscript: arbitrary command execution |
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Arch Linux Security Advisory ASA-202109-3
=========================================
Severity: High
Date : 2021-09-14
CVE-ID : CVE-2021-3781
Package : ghostscript
Type : arbitrary command execution
Remote : Yes
Link : https://security.archlinux.org/AVG-2374
Summary
=======
The package ghostscript before version 9.54.0-3 is vulnerable to
arbitrary command execution.
Resolution
==========
Upgrade to 9.54.0-3.
# pacman -Syu "ghostscript>=9.54.0-3"
The problem has been fixed upstream but no release is available yet.
Workaround
==========
None.
Description
===========
A trivial sandbox (enabled with the -dSAFER option) escape security
issue was found in the ghostscript interpreter by injecting a specially
crafted pipe command. This flaw allows a specially crafted document to
execute arbitrary commands on the system in the context of the
ghostscript interpreter.
Impact
======
An attacker could execute arbitrary commands through crafted documents,
bypassing the interpreter's sandbox.
References
==========
https://bugzilla.redhat.com/show_bug.cgi?id=2002271
https://bugs.ghostscript.com/show_bug.cgi?id=704342
https://twitter.com/emil_lerner/status/1430502815181463559
https://github.com/duc-nt/RCE-0-day-for-GhostScript-9.50
https://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=a9bd3dec9fde03327a4a2c69dad1036bf9632e20
https://security.archlinux.org/CVE-2021-3781
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