Debian LTS: DLA-1562-1: poppler security update

October 31, 2018

Various security issues were discovered in the poppler PDF rendering shared library

Summary

Various security issues were discovered in the poppler PDF rendering
shared library.

CVE-2017-18267

The FoFiType1C::cvtGlyph function in fofi/FoFiType1C.cc in Poppler
through 0.64.0 allows remote attackers to cause a denial of service
(infinite recursion) via a crafted PDF file, as demonstrated by
pdftops.

The applied fix in FoFiType1C::cvtGlyph prevents infinite recursion
on such malformed documents.

CVE-2018-10768

A NULL pointer dereference in the AnnotPath::getCoordsLength function
in Annot.h in Poppler 0.24.5 had been discovered. A crafted input
will lead to a remote denial of service attack. Later versions of
Poppler such as 0.41.0 are not affected.

The applied patch fixes the crash on AnnotInk::draw for malformed
documents.

CVE-2018-13988

Poppler through 0.62 contains an out of bounds read vulnerability due
to an incorrect memory access that is not mapped in its memory space,
as demonstrated by pdfunite. This can result in memory corruption and
denial of service. This may be exploitable when a victim opens a
specially crafted PDF file.

The applied patch fixes crashes when Object has negative number.
(Specs say, number has to be > 0 and gen >= 0).

For Poppler in Debian jessie, the original upstream patch has been
backported to Poppler's old Object API.

CVE-2018-16646

In Poppler 0.68.0, the Parser::getObj() function in Parser.cc may
cause infinite recursion via a crafted file. A remote attacker can
leverage this for a DoS attack.

A range of upstream patches has been applied to Poppler's XRef.cc in
Debian jessie to consolidate a fix for this issue.

For Debian 8 "Jessie", these problems have been fixed in version
0.26.5-2+deb8u5.

We recommend that you upgrade your poppler 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

--

mike gabriel aka sunweaver (Debian Developer)
fon: +49 (1520) 1976 148

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mail: sunweaver@debian.org, https://sunweavers.net/