Arch Linux Security Advisory ASA-201705-3

Severity: High
Date : 2017-05-07
CVE-ID : CVE-2017-8291
Package : ghostscript
Type : arbitrary command execution
Remote : Yes
Link : https://security.archlinux.org/AVG-256

Summary

The package ghostscript before version 9.21-2 is vulnerable to
arbitrary command execution.

Resolution

Upgrade to 9.21-2.

pacman -Syu “ghostscript>=9.21-2”

The problem has been fixed upstream but no release is available yet.

Workaround

None.

Description

It was found that ghostscript did not properly validate the parameters
passed to the .rsdparams and .eqproc functions. During its execution, a
specially crafted PostScript document could execute code via a
“/OutputFile (%pipe%” substring in the context of the ghostscript
process, bypassing the -dSAFER protection.

Impact

A remote attacker is able to execute arbitrary commands via a specially
crafted PostScript document.

References

https://bugs.ghostscript.com/show_bug.cgi?id=697808
https://security.archlinux.org/CVE-2017-8291