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SUSE Linux Advisory: xpdf, gpdf, kdegraphics3-pdf, pdftohtml, cups


SUSE Security Announcement

Package: xpdf, gpdf, kdegraphics3-pdf, pdftohtml, cups
Announcement-ID: SUSE-SA:2004:039
Date: Tuesday, Oct 26th 2004 10:30 MEST
Affected products: 8.1, 8.2, 9.0, 9.1, 9.2 SUSE Linux Enterprise
Server 8, 9 SUSE Linux Desktop 1.0
Vulnerability Type: remote system compromise
Severity (1-10): 5
SUSE default package: yes
Cross References: CAN-2004-0888 CAN-2004-0889

Content of this advisory:

  1. security vulnerability resolved:
    • integer overflows
    • arithmetic errors problem description
  2. solution/workaround
  3. special instructions and notes
  4. package location and checksums
  5. pending vulnerabilities, solutions, workarounds:
    • freeradius denial of service problems
    • mpg123
    • squid
  6. standard appendix (further information)

1) problem description, brief discussion

Xpdf is a widely used fast PDF file viewer. Various other PDF
viewer and PDF conversion tools use xpdf code to accomplish their
tasks. Chris Evans found several integer overflows and arithmetic
errors. Additionally Sebastian Krahmer from the SuSE Security-Team
found similar bugs in xpdf 3.
These bugs can be exploited by tricking an user to open a
malformated PDF file. As a result the PDF viewer can be crashed or
may be even code can be executed.

2) solution/workaround

Due to the wide usage of xpdf-based code we do not recommend
switching to another PDF viewer as a workaround. You have to
install the updates.

3) special instructions and notes

Please restart all running instances of xpdf, gpdf, kpdf,
pdftohtml, cups after updating successfully.

4) package location and checksums

Please download the update package for your distribution and
verify its integrity by the methods listed in section 3) of this
announcement. Then, install the package using the command “rpm -Fhv
file.rpm” to apply the update.
Our maintenance customers are being notified individually. The
packages are being offered to install from the maintenance web.

Cups packages and all 9.2 packages will be available later.

x86 Platform:

SUSE Linux 9.1:

ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/pdftohtml-0.36-112.3.i586.rpm

f17866987c9099ed8b0395d184adfffc

ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/xpdf-3.00-64.21.i586.rpm

d648d6e96013cc339dd424041f8bc973

ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/gpdf-0.112.1-26.3.i586.rpm

16864a7b7652a3183f9f8cac034cf70e

ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/kdegraphics3-pdf-3.2.1-67.6.i586.rpm

8f09aa7927d9cdcfc52ab06e520b2441
patch rpm(s):

ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/pdftohtml-0.36-112.3.i586.patch.rpm

2d3da1271fc9e072186fca6aa1de8c5c

ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/xpdf-3.00-64.21.i586.patch.rpm

093d0aaa7f4fbe24afc722057cbe334e

ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/gpdf-0.112.1-26.3.i586.patch.rpm

3af8141ddfbdf558afdf4f2f8f94a9f8

ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/kdegraphics3-pdf-3.2.1-67.6.i586.patch.rpm

0d765c907e89a91186e03d8c8de87857
source rpm(s):

ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/src/pdftohtml-0.36-112.3.src.rpm

d4892578f2d84c1bdbc36b0df9341607

ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/src/xpdf-3.00-64.21.src.rpm

d4c06775143e5e6fec7bc544d248daee

ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/src/gpdf-0.112.1-26.3.src.rpm

cfda8ff6f352e1bc4f827a3118521b25

ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/src/kdegraphics3-3.2.1-67.6.src.rpm

bb4d96dd72f0ee94315afd7b4c81e16b

SUSE Linux 9.0:

ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/pdftohtml-0.36-118.i586.rpm

dc822cef09e27e169acd94cda1fb622a

ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/xpdf-2.02pl1-141.i586.rpm

c99912bc5656546b028a8c4fe0473a75
patch rpm(s):

ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/pdftohtml-0.36-118.i586.patch.rpm

58b8a44ae02482d19c73959bfd85e85e

ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/xpdf-2.02pl1-141.i586.patch.rpm

8055fbed4ac1e664706701e3b7d3e1bc
source rpm(s):

ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/pdftohtml-0.36-118.src.rpm

35e37ded2db7d772d854748e606f42d0

ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/xpdf-2.02pl1-141.src.rpm

d42fe2976009b8ab44d6c166caf0840c

SUSE Linux 8.2:

ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/xpdf-2.01-137.i586.rpm

e198f2fc43f1f455676a9dc1ee42af5e
patch rpm(s):

ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/xpdf-2.01-137.i586.patch.rpm

acb5181c10c7b365cca71ae307b11553
source rpm(s):

ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/src/xpdf-2.01-137.src.rpm

aada3bee6ac1517f50468777c49d8d91

SUSE Linux 8.1:

ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/xpdf-1.01-255.i586.rpm

c0d7beba46d02e1090e9b6c7795a10c3
patch rpm(s):

ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/xpdf-1.01-255.i586.patch.rpm

ac395b4518a4c83d2af7805f35626a22
source rpm(s):

ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/xpdf-1.01-255.src.rpm

5ec84289ef8ca520e78cc80360d05665

x86-64 Platform:

SUSE Linux 9.1:

ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/pdftohtml-0.36-112.3.x86_64.rpm

2b0b08249164043db0e3a5b080b03f1d

ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/xpdf-3.00-64.21.x86_64.rpm

c10bbbb43b8af6bc4da4922ce2afaede

ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/gpdf-0.112.1-26.3.x86_64.rpm

7021ae8a2e9bc809240c8e953ef74fab

ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/kdegraphics3-pdf-3.2.1-67.6.x86_64.rpm

94200c51e06e9f31bc13139ea66c1626
patch rpm(s):

ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/pdftohtml-0.36-112.3.x86_64.patch.rpm

e0d057eeb94492d62be6794dfde196c9

ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/xpdf-3.00-64.21.x86_64.patch.rpm

ae9382a68c4d424cdee65324208f9e84

ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/gpdf-0.112.1-26.3.x86_64.patch.rpm

33a0a7fd7b0758175f465f8f1fa6ce36

ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/kdegraphics3-pdf-3.2.1-67.6.x86_64.patch.rpm

c4629d75d822cf47b243cf34bd8cbacb
source rpm(s):

ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/src/pdftohtml-0.36-112.3.src.rpm

f2acee920bd51b347e072463edc8f6bc

ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/src/xpdf-3.00-64.21.src.rpm

5b5c9c5d9aa1ddff06f56f83cf0365d9

ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/src/gpdf-0.112.1-26.3.src.rpm

2e2b8e6903b724462f30c07db1e76755

ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/src/kdegraphics3-3.2.1-67.6.src.rpm

e6988ea49a337ebd49f42d15afdeb188

SUSE Linux 9.0:

ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/pdftohtml-0.36-118.x86_64.rpm

942676168c21ac7253637dd3312e35d1

ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/xpdf-2.02pl1-141.x86_64.rpm

7a5076aec7aae7e6e05bf8d0f6b5e523
patch rpm(s):

ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/pdftohtml-0.36-118.x86_64.patch.rpm

b14da314a640e3afd3e72f417937c461

ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/xpdf-2.02pl1-141.x86_64.patch.rpm

fd4047d3c5392d63040e576effb32df5
source rpm(s):

ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/src/pdftohtml-0.36-118.src.rpm

5300f04533ee5b490e1f7de0a29fd705

ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/src/xpdf-2.02pl1-141.src.rpm

dd9b695199beaea8122037705eb1a581


5) pending vulnerabilities in SUSE Distributions and
Workarounds:

  • freeradius
    Several bugs that can be abused to remotely crash freeradius have
    been discovered (CAN-2004-0938, CAN-2004-0960, CAN-2004-0961). New
    packages will be available soon.
  • mpg123
    A buffer overflow in mpg123 has been discovered. New packages will
    be available soon.
  • squid
    A bug in the ASN.1 parser of the SNMP module has been fixed which
    would have allowed an attacker to crash squid (CAN-2004-0918).
    Updates will be available soon.

6) standard appendix: authenticity verification, additional
information

  • Package authenticity verification:

    SUSE update packages are available on many mirror ftp servers
    all over the world. While this service is being considered valuable
    and important to the free and open source software community, many
    users wish to be sure about the origin of the package and its
    content before installing the package. There are two verification
    methods that can be used independently from each other to prove the
    authenticity of a downloaded file or rpm package:

    1. md5sums as provided in the (cryptographically signed)
      announcement.
    2. using the internal gpg signatures of the rpm package.
    3. execute the command md5sum <name-of-the-file.rpm> after
      you downloaded the file from a SUSE ftp server or its mirrors.
      Then, compare the resulting md5sum with the one that is listed in
      the announcement. Since the announcement containing the checksums
      is cryptographically signed (usually using the key [email protected]), the checksums show
      proof of the authenticity of the package. We disrecommend to
      subscribe to security lists which cause the email message
      containing the announcement to be modified so that the signature
      does not match after transport through the mailing list software.
      Downsides: You must be able to verify the authenticity of the
      announcement in the first place. If RPM packages are being rebuilt
      and a new version of a package is published on the ftp server, all
      md5 sums for the files are useless.
    4. rpm package signatures provide an easy way to verify the
      authenticity of an rpm package. Use the command rpm -v –checksig
      <file.rpm> to verify the signature of the package, where
      <file.rpm> is the filename of the rpm package that you have
      downloaded. Of course, package authenticity verification can only
      target an un-installed rpm package file. Prerequisites:

      1. gpg is installed
      2. The package is signed using a certain key. The public part of
        this key must be installed by the gpg program in the directory
        ~/.gnupg/ under the user’s home directory who performs the
        signature verification (usually root). You can import the key that
        is used by SUSE in rpm packages for SUSE Linux by saving this
        announcement to a file (“announcement.txt”) and running the command
        (do “su -” to be root): gpg –batch; gpg < announcement.txt |
        gpg –import SUSE Linux distributions version 7.1 and thereafter
        install the key “[email protected]
        upon installation or upgrade, provided that the package gpg is
        installed. The file containing the public key is placed at the
        top-level directory of the first CD (pubring.gpg) and at ftp://ftp.suse.com/pub/suse/pubring.gpg-build.suse.de
        .
  • SUSE runs two security mailing lists to which any interested
    party may subscribe:

    [email protected]

  • general/linux/SUSE security discussion. All SUSE security
    announcements are sent to this list. To subscribe, send an email to

    <[email protected]>.

    [email protected]

  • SUSE’s announce-only mailing list.
    Only SUSE’s security announcements are sent to this list. To
    subscribe, send an email to

    <[email protected]>.

    For general information or the frequently asked questions (faq)
    send mail to:

    <[email protected]>
    or
    <[email protected]>
    respectively.


SUSE’s security contact is <[email protected]> or
<[email protected]>. The
<[email protected]>
public key is listed below.



The information in this advisory may be distributed or
reproduced, provided that the advisory is not modified in any way.
In particular, it is desired that the clear-text signature shows
proof of the authenticity of the text.
SUSE Linux AG makes no warranties of any kind whatsoever with
respect to the information contained in this security advisory.

Type Bits/KeyID Date User ID
pub 2048R/3D25D3D9 1999-03-06 SuSE Security Team <[email protected]>
pub 1024D/9C800ACA 2000-10-19 SuSE Package Signing Key <[email protected].de>