SB2018122107 - Amazon Linux AMI update for ghostscript

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Main Vulnerability Database SB2018122107

SB2018122107 - Amazon Linux AMI update for ghostscript

Published: December 21, 2018

Security Bulletin ID SB2018122107
CSH Severity
High
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) OS command injection (CVE-ID: CVE-2018-16509)

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Amber


The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to /invalidaccess checks can be bypassed after a restore failure. A remote unauthenticated attacker can trick the victim into opening a specially crafted PostScript file that submits malicious input and execute arbitrary shell commands.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Note: original fix for this vulnerability was incomplete in version 9.24. Vendor has issued another patch.


Remediation

Install update from vendor's website.

References