CVE-2018-16509 Information

Description

An issue was discovered in Artifex Ghostscript before 9.24. Incorrect \restoration of privilege\ checking during handling of /invalidaccess exceptions could be used by attackers able to supply crafted PostScript to execute code using the \pipe\ instruction.

CVSS Vector

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Reference

http://git.ghostscript.com/?p=ghostpdl.git;a=commit;h=5516c614dc33662a2afdc377159f70218e67bde5 http://git.ghostscript.com/?p=ghostpdl.git;a=commit;h=78911a01b67d590b4a91afac2e8417360b934156 http://git.ghostscript.com/?p=ghostpdl.git;a=commit;h=79cccf641486a6595c43f1de1cd7ade696020a31 http://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=520bb0ea7519aa3e79db78aaf0589dae02103764 http://seclists.org/oss-sec/2018/q3/142 http://www.securityfocus.com/bid/105122 https://access.redhat.com/errata/RHSA-2018:2918 https://access.redhat.com/errata/RHSA-2018:3760 https://bugs.ghostscript.com/show_bug.cgi?id=699654 https://lists.debian.org/debian-lts-announce/2018/09/msg00015.html https://security.gentoo.org/glsa/201811-12 https://usn.ubuntu.com/3768-1/ https://www.artifex.com/news/ghostscript-security-resolved/ https://www.debian.org/security/2018/dsa-4294 https://www.exploit-db.com/exploits/45369/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8