Synopsis
Important: ghostscript security update
Type/Severity
Security Advisory: Important
Topic
An update for ghostscript is now available for Red Hat Enterprise Linux 6.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Description
The Ghostscript suite contains utilities for rendering PostScript and PDF documents. Ghostscript translates PostScript code to common bitmap formats so that the code can be displayed or printed.
Security Fix(es):
- It was discovered that the ghostscript /invalidaccess checks fail under certain conditions. An attacker could possibly exploit this to bypass the -dSAFER protection and, for example, execute arbitrary shell commands via a specially crafted PostScript document. (CVE-2018-16509)
Red Hat would like to thank Tavis Ormandy (Google Project Zero) for reporting this issue.
Solution
For details on how to apply this update, which includes the changes described in this advisory, refer to:
https://access.redhat.com/articles/11258
Affected Products
-
Red Hat Enterprise Linux Server 6 x86_64
-
Red Hat Enterprise Linux Server 6 i386
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Red Hat Enterprise Linux Workstation 6 x86_64
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Red Hat Enterprise Linux Workstation 6 i386
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Red Hat Enterprise Linux Desktop 6 x86_64
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Red Hat Enterprise Linux Desktop 6 i386
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Red Hat Enterprise Linux for IBM z Systems 6 s390x
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Red Hat Enterprise Linux for Power, big endian 6 ppc64
-
Red Hat Enterprise Linux for Scientific Computing 6 x86_64
Fixes
- BZ - 1619748 - CVE-2018-16509 ghostscript: /invalidaccess bypass after failed restore (699654)
CVEs
References