ESB-2019.0013 - [Debian] ghostscript: Multiple vulnerabilities 2019-01-02

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.0013
                 [DLA 1620-1] ghostscript security update
                              2 January 2019

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           ghostscript
Publisher:         Debian
Operating System:  Debian GNU/Linux 8
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
                   Denial of Service               -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-19478 CVE-2018-19134 

Reference:         ESB-2018.3902

Original Bulletin: 
   https://lists.debian.org/debian-lts-announce/2018/12/msg00019.html

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Package        : ghostscript
Version        : 9.06~dfsg-2+deb8u13
CVE ID         : CVE-2018-19134 CVE-2018-19478


Some vulnerabilities were discovered in ghostscript, an interpreter for the
PostScript language and for PDF.

CVE-2018-19134

    The setpattern operator did not properly validate certain types. A specially
    crafted PostScript document could exploit this to crash Ghostscript or,
    possibly, execute arbitrary code in the context of the Ghostscript process.
    This is a type confusion issue because of failure to check whether the
    Implementation of a pattern dictionary was a structure type.

CVE-2018-19478

    Attempting to open a carefully crafted PDF file results in long-running
    computation. A sufficiently bad page tree can lead to us taking significant
    amounts of time when checking the tree for recursion.

For Debian 8 "Jessie", these problems have been fixed in version
9.06~dfsg-2+deb8u13.

We recommend that you upgrade your ghostscript packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS

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