SB2017042603 - Remote command injection in Ghostscript

Description

This security bulletin contains information about 1 security vulnerability.

1) Type confusion (CVE-ID: CVE-2017-8291)

The vulnerability allows a remote unauthenticated attacker to execute arbitrary commands on a targeted system.

The weakness exists due to type confusion error when processing user-supplied parameters passed to the .rsdparams and .eqproc functions in ghostscript. A remote attacker can submit a specially crafted .eps document, execute code in the context of the ghostscript process and bypass -dSAFER protection.

Successful exploitation of the vulnerability may result in system compromise.

Note: this vulnerability is being exploited in the wild.

Remediation

Install update from vendor's website.

References

• http://seclists.org/oss-sec/2017/q2/155
• https://bugs.ghostscript.com/show_bug.cgi?id=697799
• https://www.rapid7.com/db/modules/exploit/unix/fileformat/ghostscript_type_confusion