An issue was discovered in Artifex Ghostscript before 9.24. The .setdistillerkeys PostScript command is accepted even though it is not intended for use during document processing (e.g., after the startup phase). This leads to memory corruption, allowing remote attackers able to supply crafted PostScript to crash the interpreter or possibly have unspecified other impact.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2018-16585 from the MITRE CVE dictionary dictionary and NIST NVD.
It was found that .distillerparamkeys and .setdistillerparams methods can be called although they are not intended to be used. However, the only security threat they cause has been fixed via CVE-2018-15910.
NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.
| CVSS3 Base Score | 2.5 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L |
| Attack Vector | Local |
| Attack Complexity | High |
| Privileges Required | None |
| User Interaction | Required |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity Impact | None |
| Availability Impact | Low |
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 7 | ghostscript | Affected |
| Red Hat Enterprise Linux 6 | ghostscript | Will not fix |
| Red Hat Enterprise Linux 5 | ghostscript | Will not fix |
Vulmon