ALAS-2017-784


Amazon Linux AMI Security Advisory: ALAS-2017-784
Advisory Release Date: 2017-01-10 18:00 Pacific
Severity: Medium

Issue Overview:

It was found that the ghostscript functions getenv, filenameforall and .libfile did not honor the -dSAFER option, usually used when processing untrusted documents, leading to information disclosure. A specially crafted postscript document could read environment variable, list directory and retrieve file content respectively, from the target. (CVE-2013-5653 , CVE-2016-7977 )

It was found that the ghostscript function .initialize_dsc_parser did not validate its parameter before using it, allowing a type confusion flaw. A specially crafted postscript document could cause a crash code execution in the context of the gs process. (CVE-2016-7979 )

It was found that ghostscript did not sufficiently check the validity of parameters given to the .sethalftone5 function. A specially crafted postscript document could cause a crash, or execute arbitrary code in the context of the gs process. (CVE-2016-8602 )


Affected Packages:

ghostscript


Issue Correction:
Run yum update ghostscript to update your system.

New Packages:
i686:
    ghostscript-doc-8.70-21.1.24.amzn1.i686
    ghostscript-devel-8.70-21.1.24.amzn1.i686
    ghostscript-8.70-21.1.24.amzn1.i686
    ghostscript-debuginfo-8.70-21.1.24.amzn1.i686

src:
    ghostscript-8.70-21.1.24.amzn1.src

x86_64:
    ghostscript-doc-8.70-21.1.24.amzn1.x86_64
    ghostscript-devel-8.70-21.1.24.amzn1.x86_64
    ghostscript-debuginfo-8.70-21.1.24.amzn1.x86_64
    ghostscript-8.70-21.1.24.amzn1.x86_64